{"id":14917,"date":"2026-07-24T07:13:30","date_gmt":"2026-07-24T07:13:30","guid":{"rendered":"https:\/\/chinalabgrowndiamond.com\/what-is-face-up-size-diamond\/"},"modified":"2026-07-24T07:13:30","modified_gmt":"2026-07-24T07:13:30","slug":"what-is-face-up-size-diamond","status":"publish","type":"post","link":"https:\/\/chinalabgrowndiamond.com\/ja\/what-is-face-up-size-diamond\/","title":{"rendered":"What Is Face-Up Size in Diamonds? A Complete Guide"},"content":{"rendered":"<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<p>\u00a9 VANTYRE Jewelry Guide<\/p>\n<!-- \/wp:image -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:paragraph -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:paragraph --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:heading --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:heading --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:heading --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:heading --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:paragraph -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:heading -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>Myth<\/th><th>Fact<\/th><\/tr><\/thead><tbody>\n<tr><td>Carat weight determines how big a diamond looks.<\/td><td>Face-up size depends on shape, cut, and depth \u2014 not just carat.<\/td><\/tr>\n<tr><td>Round diamonds have the best face-up size.<\/td><td>Elongated shapes like oval and marquise offer more face-up size per carat.<\/td><\/tr>\n<tr><td>Face-up size is the same as carat weight.<\/td><td>Face-up size measures visible surface area. Carat measures weight.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-faq-block\">\n<!-- wp:heading --><h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2><!-- \/wp:heading -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:html -->\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>Myth<\/th><th>Fact<\/th><\/tr><\/thead><tbody>\n<tr><td>Carat weight determines how big a diamond looks.<\/td><td>Face-up size depends on shape, cut, and depth \u2014 not just carat.<\/td><\/tr>\n<tr><td>Round diamonds have the best face-up size.<\/td><td>Elongated shapes like oval and marquise offer more face-up size per carat.<\/td><\/tr>\n<tr><td>Face-up size is the same as carat weight.<\/td><td>Face-up size measures visible surface area. Carat measures weight.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-faq-block\">\n<!-- wp:heading --><h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2><!-- \/wp:heading -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:table -->\n<!-- wp:list -->\n<ul><li>Confusing carat weight with face-up size \u2014 they are not the same thing.<\/li>\n<li>Assuming all diamonds of the same carat have the same face-up size.<\/li>\n<li>Choosing a deep-cut diamond that faces up smaller than expected.<\/li>\n<li>Ignoring shape \u2014 elongated shapes offer more face-up size per carat.<\/li><\/ul>\n\n<!-- wp:heading --><h2>Myth vs Fact<\/h2><!-- \/wp:heading -->\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>Myth<\/th><th>Fact<\/th><\/tr><\/thead><tbody>\n<tr><td>Carat weight determines how big a diamond looks.<\/td><td>Face-up size depends on shape, cut, and depth \u2014 not just carat.<\/td><\/tr>\n<tr><td>Round diamonds have the best face-up size.<\/td><td>Elongated shapes like oval and marquise offer more face-up size per carat.<\/td><\/tr>\n<tr><td>Face-up size is the same as carat weight.<\/td><td>Face-up size measures visible surface area. Carat measures weight.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-faq-block\">\n<!-- wp:heading --><h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2><!-- \/wp:heading -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:list -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-buying-checklist-flatlay.jpg\" alt=\"Face-up size buying checklist.\"\/><figcaption>When evaluating face-up size, compare millimeter dimensions, check depth percentage, and consider the shape.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-decision-box\">\n  <h2>Quick Reference<\/h2>\n  <p><strong>For maximum face-up size per carat:<\/strong> choose marquise, oval, or pear.<\/p>\n  <p><strong>For a balance of face-up size and sparkle:<\/strong> choose oval or radiant.<\/p>\n  <p><strong>Always compare:<\/strong> length and width in millimeters, not just carat weight.<\/p>\n  <p><strong>Check:<\/strong> depth percentage \u2014 shallower diamonds face up larger.<\/p>\n  <p><a href=\"\/ja\/diamonds\/\">Compare lab grown diamonds<\/a>.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Common Mistakes<\/h2><!-- \/wp:heading -->\n<!-- wp:list -->\n<ul><li>Confusing carat weight with face-up size \u2014 they are not the same thing.<\/li>\n<li>Assuming all diamonds of the same carat have the same face-up size.<\/li>\n<li>Choosing a deep-cut diamond that faces up smaller than expected.<\/li>\n<li>Ignoring shape \u2014 elongated shapes offer more face-up size per carat.<\/li><\/ul>\n\n<!-- wp:heading --><h2>Myth vs Fact<\/h2><!-- \/wp:heading -->\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>Myth<\/th><th>Fact<\/th><\/tr><\/thead><tbody>\n<tr><td>Carat weight determines how big a diamond looks.<\/td><td>Face-up size depends on shape, cut, and depth \u2014 not just carat.<\/td><\/tr>\n<tr><td>Round diamonds have the best face-up size.<\/td><td>Elongated shapes like oval and marquise offer more face-up size per carat.<\/td><\/tr>\n<tr><td>Face-up size is the same as carat weight.<\/td><td>Face-up size measures visible surface area. Carat measures weight.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-faq-block\">\n<!-- wp:heading --><h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2><!-- \/wp:heading -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:html -->\n<p><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Learn more about which shapes offer the best face-up size<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-buying-checklist-flatlay.jpg\" alt=\"Face-up size buying checklist.\"\/><figcaption>When evaluating face-up size, compare millimeter dimensions, check depth percentage, and consider the shape.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-decision-box\">\n  <h2>Quick Reference<\/h2>\n  <p><strong>For maximum face-up size per carat:<\/strong> choose marquise, oval, or pear.<\/p>\n  <p><strong>For a balance of face-up size and sparkle:<\/strong> choose oval or radiant.<\/p>\n  <p><strong>Always compare:<\/strong> length and width in millimeters, not just carat weight.<\/p>\n  <p><strong>Check:<\/strong> depth percentage \u2014 shallower diamonds face up larger.<\/p>\n  <p><a href=\"\/ja\/diamonds\/\">Compare lab grown diamonds<\/a>.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Common Mistakes<\/h2><!-- \/wp:heading -->\n<!-- wp:list -->\n<ul><li>Confusing carat weight with face-up size \u2014 they are not the same thing.<\/li>\n<li>Assuming all diamonds of the same carat have the same face-up size.<\/li>\n<li>Choosing a deep-cut diamond that faces up smaller than expected.<\/li>\n<li>Ignoring shape \u2014 elongated shapes offer more face-up size per carat.<\/li><\/ul>\n\n<!-- wp:heading --><h2>Myth vs Fact<\/h2><!-- \/wp:heading -->\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>Myth<\/th><th>Fact<\/th><\/tr><\/thead><tbody>\n<tr><td>Carat weight determines how big a diamond looks.<\/td><td>Face-up size depends on shape, cut, and depth \u2014 not just carat.<\/td><\/tr>\n<tr><td>Round diamonds have the best face-up size.<\/td><td>Elongated shapes like oval and marquise offer more face-up size per carat.<\/td><\/tr>\n<tr><td>Face-up size is the same as carat weight.<\/td><td>Face-up size measures visible surface area. Carat measures weight.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-faq-block\">\n<!-- wp:heading --><h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2><!-- \/wp:heading -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:image -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30b7\u30a7\u30a4\u30d7<\/th><th>Face-Up Size per Carat<\/th><th>Why<\/th><\/tr><\/thead><tbody>\n<tr><td>Marquise<\/td><td>Excellent<\/td><td>Extreme elongation creates maximum finger coverage<\/td><\/tr>\n<tr><td>Oval<\/td><td>Excellent<\/td><td>Elongated shape spreads weight across more length<\/td><\/tr>\n<tr><td>Pear<\/td><td>Excellent<\/td><td>Teardrop shape adds visual length<\/td><\/tr>\n<tr><td>Emerald<\/td><td>Very good<\/td><td>Broad step facets create wide spread<\/td><\/tr>\n<tr><td>Radiant<\/td><td>Good<\/td><td>Rectangular shape with good spread potential<\/td><\/tr>\n<tr><td>Round<\/td><td>Moderate<\/td><td>Compact shape, smaller face-up size per carat<\/td><\/tr>\n<tr><td>Cushion<\/td><td>Variable<\/td><td>Depends heavily on depth and faceting style<\/td><\/tr>\n<tr><td>Princess<\/td><td>Moderate<\/td><td>Square shape with compact footprint<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:paragraph -->\n<p><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Learn more about which shapes offer the best face-up size<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-buying-checklist-flatlay.jpg\" alt=\"Face-up size buying checklist.\"\/><figcaption>When evaluating face-up size, compare millimeter dimensions, check depth percentage, and consider the shape.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-decision-box\">\n  <h2>Quick Reference<\/h2>\n  <p><strong>For maximum face-up size per carat:<\/strong> choose marquise, oval, or pear.<\/p>\n  <p><strong>For a balance of face-up size and sparkle:<\/strong> choose oval or radiant.<\/p>\n  <p><strong>Always compare:<\/strong> length and width in millimeters, not just carat weight.<\/p>\n  <p><strong>Check:<\/strong> depth percentage \u2014 shallower diamonds face up larger.<\/p>\n  <p><a href=\"\/ja\/diamonds\/\">Compare lab grown diamonds<\/a>.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Common Mistakes<\/h2><!-- \/wp:heading -->\n<!-- wp:list -->\n<ul><li>Confusing carat weight with face-up size \u2014 they are not the same thing.<\/li>\n<li>Assuming all diamonds of the same carat have the same face-up size.<\/li>\n<li>Choosing a deep-cut diamond that faces up smaller than expected.<\/li>\n<li>Ignoring shape \u2014 elongated shapes offer more face-up size per carat.<\/li><\/ul>\n\n<!-- wp:heading --><h2>Myth vs Fact<\/h2><!-- \/wp:heading -->\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>Myth<\/th><th>Fact<\/th><\/tr><\/thead><tbody>\n<tr><td>Carat weight determines how big a diamond looks.<\/td><td>Face-up size depends on shape, cut, and depth \u2014 not just carat.<\/td><\/tr>\n<tr><td>Round diamonds have the best face-up size.<\/td><td>Elongated shapes like oval and marquise offer more face-up size per carat.<\/td><\/tr>\n<tr><td>Face-up size is the same as carat weight.<\/td><td>Face-up size measures visible surface area. Carat measures weight.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-faq-block\">\n<!-- wp:heading --><h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2><!-- \/wp:heading -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:paragraph -->\n\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30b7\u30a7\u30a4\u30d7<\/th><th>Face-Up Size per Carat<\/th><th>Why<\/th><\/tr><\/thead><tbody>\n<tr><td>Marquise<\/td><td>Excellent<\/td><td>Extreme elongation creates maximum finger coverage<\/td><\/tr>\n<tr><td>Oval<\/td><td>Excellent<\/td><td>Elongated shape spreads weight across more length<\/td><\/tr>\n<tr><td>Pear<\/td><td>Excellent<\/td><td>Teardrop shape adds visual length<\/td><\/tr>\n<tr><td>Emerald<\/td><td>Very good<\/td><td>Broad step facets create wide spread<\/td><\/tr>\n<tr><td>Radiant<\/td><td>Good<\/td><td>Rectangular shape with good spread potential<\/td><\/tr>\n<tr><td>Round<\/td><td>Moderate<\/td><td>Compact shape, smaller face-up size per carat<\/td><\/tr>\n<tr><td>Cushion<\/td><td>Variable<\/td><td>Depends heavily on depth and faceting style<\/td><\/tr>\n<tr><td>Princess<\/td><td>Moderate<\/td><td>Square shape with compact footprint<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:paragraph -->\n<p><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Learn more about which shapes offer the best face-up size<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-buying-checklist-flatlay.jpg\" alt=\"Face-up size buying checklist.\"\/><figcaption>When evaluating face-up size, compare millimeter dimensions, check depth percentage, and consider the shape.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-decision-box\">\n  <h2>Quick Reference<\/h2>\n  <p><strong>For maximum face-up size per carat:<\/strong> choose marquise, oval, or pear.<\/p>\n  <p><strong>For a balance of face-up size and sparkle:<\/strong> choose oval or radiant.<\/p>\n  <p><strong>Always compare:<\/strong> length and width in millimeters, not just carat weight.<\/p>\n  <p><strong>Check:<\/strong> depth percentage \u2014 shallower diamonds face up larger.<\/p>\n  <p><a href=\"\/ja\/diamonds\/\">Compare lab grown diamonds<\/a>.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Common Mistakes<\/h2><!-- \/wp:heading -->\n<!-- wp:list -->\n<ul><li>Confusing carat weight with face-up size \u2014 they are not the same thing.<\/li>\n<li>Assuming all diamonds of the same carat have the same face-up size.<\/li>\n<li>Choosing a deep-cut diamond that faces up smaller than expected.<\/li>\n<li>Ignoring shape \u2014 elongated shapes offer more face-up size per carat.<\/li><\/ul>\n\n<!-- wp:heading --><h2>Myth vs Fact<\/h2><!-- \/wp:heading -->\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>Myth<\/th><th>Fact<\/th><\/tr><\/thead><tbody>\n<tr><td>Carat weight determines how big a diamond looks.<\/td><td>Face-up size depends on shape, cut, and depth \u2014 not just carat.<\/td><\/tr>\n<tr><td>Round diamonds have the best face-up size.<\/td><td>Elongated shapes like oval and marquise offer more face-up size per carat.<\/td><\/tr>\n<tr><td>Face-up size is the same as carat weight.<\/td><td>Face-up size measures visible surface area. Carat measures weight.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-faq-block\">\n<!-- wp:heading --><h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2><!-- \/wp:heading -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:table --><p>A diamond with a shallow cut spreads its weight across a wider area, creating a larger face-up size. A diamond with a deep cut concentrates weight downward, making it appear smaller from above. This is why two 1 carat diamonds can look different in size.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-macro-measurement-detail.jpg\" alt=\"Diamond face-up size measurement detail.\"\/><figcaption>Face-up size depends on cut depth and shape. A shallow diamond faces up larger than a deep diamond of the same carat.<\/figcaption><\/figure>\n\n<!-- wp:heading --><h2>Which Shapes Offer the Best Face-Up Size?<\/h2><!-- \/wp:heading -->\n\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30b7\u30a7\u30a4\u30d7<\/th><th>Face-Up Size per Carat<\/th><th>Why<\/th><\/tr><\/thead><tbody>\n<tr><td>Marquise<\/td><td>Excellent<\/td><td>Extreme elongation creates maximum finger coverage<\/td><\/tr>\n<tr><td>Oval<\/td><td>Excellent<\/td><td>Elongated shape spreads weight across more length<\/td><\/tr>\n<tr><td>Pear<\/td><td>Excellent<\/td><td>Teardrop shape adds visual length<\/td><\/tr>\n<tr><td>Emerald<\/td><td>Very good<\/td><td>Broad step facets create wide spread<\/td><\/tr>\n<tr><td>Radiant<\/td><td>Good<\/td><td>Rectangular shape with good spread potential<\/td><\/tr>\n<tr><td>Round<\/td><td>Moderate<\/td><td>Compact shape, smaller face-up size per carat<\/td><\/tr>\n<tr><td>Cushion<\/td><td>Variable<\/td><td>Depends heavily on depth and faceting style<\/td><\/tr>\n<tr><td>Princess<\/td><td>Moderate<\/td><td>Square shape with compact footprint<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:paragraph -->\n<p><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Learn more about which shapes offer the best face-up size<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-buying-checklist-flatlay.jpg\" alt=\"Face-up size buying checklist.\"\/><figcaption>When evaluating face-up size, compare millimeter dimensions, check depth percentage, and consider the shape.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-decision-box\">\n  <h2>Quick Reference<\/h2>\n  <p><strong>For maximum face-up size per carat:<\/strong> choose marquise, oval, or pear.<\/p>\n  <p><strong>For a balance of face-up size and sparkle:<\/strong> choose oval or radiant.<\/p>\n  <p><strong>Always compare:<\/strong> length and width in millimeters, not just carat weight.<\/p>\n  <p><strong>Check:<\/strong> depth percentage \u2014 shallower diamonds face up larger.<\/p>\n  <p><a href=\"\/ja\/diamonds\/\">Compare lab grown diamonds<\/a>.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Common Mistakes<\/h2><!-- \/wp:heading -->\n<!-- wp:list -->\n<ul><li>Confusing carat weight with face-up size \u2014 they are not the same thing.<\/li>\n<li>Assuming all diamonds of the same carat have the same face-up size.<\/li>\n<li>Choosing a deep-cut diamond that faces up smaller than expected.<\/li>\n<li>Ignoring shape \u2014 elongated shapes offer more face-up size per carat.<\/li><\/ul>\n\n<!-- wp:heading --><h2>Myth vs Fact<\/h2><!-- \/wp:heading -->\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>Myth<\/th><th>Fact<\/th><\/tr><\/thead><tbody>\n<tr><td>Carat weight determines how big a diamond looks.<\/td><td>Face-up size depends on shape, cut, and depth \u2014 not just carat.<\/td><\/tr>\n<tr><td>Round diamonds have the best face-up size.<\/td><td>Elongated shapes like oval and marquise offer more face-up size per carat.<\/td><\/tr>\n<tr><td>Face-up size is the same as carat weight.<\/td><td>Face-up size measures visible surface area. Carat measures weight.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-faq-block\">\n<!-- wp:heading --><h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2><!-- \/wp:heading -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:image -->\n<p>Face-up size refers to the visible surface area of a diamond when you look at it directly from above. It is measured by the diamond&#8217;s width and length in millimeters. Carat weight tells you how much the diamond weighs. Face-up size tells you how large it actually looks.<\/p>\n<!-- wp:paragraph --><p>A diamond with a shallow cut spreads its weight across a wider area, creating a larger face-up size. A diamond with a deep cut concentrates weight downward, making it appear smaller from above. This is why two 1 carat diamonds can look different in size.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-macro-measurement-detail.jpg\" alt=\"Diamond face-up size measurement detail.\"\/><figcaption>Face-up size depends on cut depth and shape. A shallow diamond faces up larger than a deep diamond of the same carat.<\/figcaption><\/figure>\n\n<!-- wp:heading --><h2>Which Shapes Offer the Best Face-Up Size?<\/h2><!-- \/wp:heading -->\n\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30b7\u30a7\u30a4\u30d7<\/th><th>Face-Up Size per Carat<\/th><th>Why<\/th><\/tr><\/thead><tbody>\n<tr><td>Marquise<\/td><td>Excellent<\/td><td>Extreme elongation creates maximum finger coverage<\/td><\/tr>\n<tr><td>Oval<\/td><td>Excellent<\/td><td>Elongated shape spreads weight across more length<\/td><\/tr>\n<tr><td>Pear<\/td><td>Excellent<\/td><td>Teardrop shape adds visual length<\/td><\/tr>\n<tr><td>Emerald<\/td><td>Very good<\/td><td>Broad step facets create wide spread<\/td><\/tr>\n<tr><td>Radiant<\/td><td>Good<\/td><td>Rectangular shape with good spread potential<\/td><\/tr>\n<tr><td>Round<\/td><td>Moderate<\/td><td>Compact shape, smaller face-up size per carat<\/td><\/tr>\n<tr><td>Cushion<\/td><td>Variable<\/td><td>Depends heavily on depth and faceting style<\/td><\/tr>\n<tr><td>Princess<\/td><td>Moderate<\/td><td>Square shape with compact footprint<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:paragraph -->\n<p><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Learn more about which shapes offer the best face-up size<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-buying-checklist-flatlay.jpg\" alt=\"Face-up size buying checklist.\"\/><figcaption>When evaluating face-up size, compare millimeter dimensions, check depth percentage, and consider the shape.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-decision-box\">\n  <h2>Quick Reference<\/h2>\n  <p><strong>For maximum face-up size per carat:<\/strong> choose marquise, oval, or pear.<\/p>\n  <p><strong>For a balance of face-up size and sparkle:<\/strong> choose oval or radiant.<\/p>\n  <p><strong>Always compare:<\/strong> length and width in millimeters, not just carat weight.<\/p>\n  <p><strong>Check:<\/strong> depth percentage \u2014 shallower diamonds face up larger.<\/p>\n  <p><a href=\"\/ja\/diamonds\/\">Compare lab grown diamonds<\/a>.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Common Mistakes<\/h2><!-- \/wp:heading -->\n<!-- wp:list -->\n<ul><li>Confusing carat weight with face-up size \u2014 they are not the same thing.<\/li>\n<li>Assuming all diamonds of the same carat have the same face-up size.<\/li>\n<li>Choosing a deep-cut diamond that faces up smaller than expected.<\/li>\n<li>Ignoring shape \u2014 elongated shapes offer more face-up size per carat.<\/li><\/ul>\n\n<!-- wp:heading --><h2>Myth vs Fact<\/h2><!-- \/wp:heading -->\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>Myth<\/th><th>Fact<\/th><\/tr><\/thead><tbody>\n<tr><td>Carat weight determines how big a diamond looks.<\/td><td>Face-up size depends on shape, cut, and depth \u2014 not just carat.<\/td><\/tr>\n<tr><td>Round diamonds have the best face-up size.<\/td><td>Elongated shapes like oval and marquise offer more face-up size per carat.<\/td><\/tr>\n<tr><td>Face-up size is the same as carat weight.<\/td><td>Face-up size measures visible surface area. Carat measures weight.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-faq-block\">\n<!-- wp:heading --><h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2><!-- \/wp:heading -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:paragraph -->\n<!-- wp:paragraph -->\n<p>Face-up size refers to the visible surface area of a diamond when you look at it directly from above. It is measured by the diamond&#8217;s width and length in millimeters. Carat weight tells you how much the diamond weighs. Face-up size tells you how large it actually looks.<\/p>\n<!-- wp:paragraph --><p>A diamond with a shallow cut spreads its weight across a wider area, creating a larger face-up size. A diamond with a deep cut concentrates weight downward, making it appear smaller from above. This is why two 1 carat diamonds can look different in size.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-macro-measurement-detail.jpg\" alt=\"Diamond face-up size measurement detail.\"\/><figcaption>Face-up size depends on cut depth and shape. A shallow diamond faces up larger than a deep diamond of the same carat.<\/figcaption><\/figure>\n\n<!-- wp:heading --><h2>Which Shapes Offer the Best Face-Up Size?<\/h2><!-- \/wp:heading -->\n\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30b7\u30a7\u30a4\u30d7<\/th><th>Face-Up Size per Carat<\/th><th>Why<\/th><\/tr><\/thead><tbody>\n<tr><td>Marquise<\/td><td>Excellent<\/td><td>Extreme elongation creates maximum finger coverage<\/td><\/tr>\n<tr><td>Oval<\/td><td>Excellent<\/td><td>Elongated shape spreads weight across more length<\/td><\/tr>\n<tr><td>Pear<\/td><td>Excellent<\/td><td>Teardrop shape adds visual length<\/td><\/tr>\n<tr><td>Emerald<\/td><td>Very good<\/td><td>Broad step facets create wide spread<\/td><\/tr>\n<tr><td>Radiant<\/td><td>Good<\/td><td>Rectangular shape with good spread potential<\/td><\/tr>\n<tr><td>Round<\/td><td>Moderate<\/td><td>Compact shape, smaller face-up size per carat<\/td><\/tr>\n<tr><td>Cushion<\/td><td>Variable<\/td><td>Depends heavily on depth and faceting style<\/td><\/tr>\n<tr><td>Princess<\/td><td>Moderate<\/td><td>Square shape with compact footprint<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:paragraph -->\n<p><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Learn more about which shapes offer the best face-up size<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-buying-checklist-flatlay.jpg\" alt=\"Face-up size buying checklist.\"\/><figcaption>When evaluating face-up size, compare millimeter dimensions, check depth percentage, and consider the shape.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-decision-box\">\n  <h2>Quick Reference<\/h2>\n  <p><strong>For maximum face-up size per carat:<\/strong> choose marquise, oval, or pear.<\/p>\n  <p><strong>For a balance of face-up size and sparkle:<\/strong> choose oval or radiant.<\/p>\n  <p><strong>Always compare:<\/strong> length and width in millimeters, not just carat weight.<\/p>\n  <p><strong>Check:<\/strong> depth percentage \u2014 shallower diamonds face up larger.<\/p>\n  <p><a href=\"\/ja\/diamonds\/\">Compare lab grown diamonds<\/a>.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Common Mistakes<\/h2><!-- \/wp:heading -->\n<!-- wp:list -->\n<ul><li>Confusing carat weight with face-up size \u2014 they are not the same thing.<\/li>\n<li>Assuming all diamonds of the same carat have the same face-up size.<\/li>\n<li>Choosing a deep-cut diamond that faces up smaller than expected.<\/li>\n<li>Ignoring shape \u2014 elongated shapes offer more face-up size per carat.<\/li><\/ul>\n\n<!-- wp:heading --><h2>Myth vs Fact<\/h2><!-- \/wp:heading -->\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>Myth<\/th><th>Fact<\/th><\/tr><\/thead><tbody>\n<tr><td>Carat weight determines how big a diamond looks.<\/td><td>Face-up size depends on shape, cut, and depth \u2014 not just carat.<\/td><\/tr>\n<tr><td>Round diamonds have the best face-up size.<\/td><td>Elongated shapes like oval and marquise offer more face-up size per carat.<\/td><\/tr>\n<tr><td>Face-up size is the same as carat weight.<\/td><td>Face-up size measures visible surface area. Carat measures weight.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-faq-block\">\n<!-- wp:heading --><h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2><!-- \/wp:heading -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:paragraph -->\n<div class=\"vantyre-article-box vantyre-quick-answer\">\n  <strong>Quick Answer:<\/strong>\n  <p>Face-up size is the visible surface area of a diamond when viewed from above. It depends on the diamond&#8217;s shape, cut proportions, and depth \u2014 not just carat weight. Two diamonds of the same carat can have different face-up sizes. Elongated shapes like oval and marquise offer more face-up size per carat than round or cushion shapes.<\/p>\n<\/div>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-shape-size-comparison.jpg\" alt=\"Face-up size diamond shape comparison.\"\/><figcaption>Face-up size varies by shape and cut. Elongated diamonds usually offer more visible surface area per carat.<\/figcaption><\/figure>\n\n<!-- wp:heading --><h2>What Is Face-Up Size?<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size refers to the visible surface area of a diamond when you look at it directly from above. It is measured by the diamond&#8217;s width and length in millimeters. Carat weight tells you how much the diamond weighs. Face-up size tells you how large it actually looks.<\/p>\n<!-- wp:paragraph --><p>A diamond with a shallow cut spreads its weight across a wider area, creating a larger face-up size. A diamond with a deep cut concentrates weight downward, making it appear smaller from above. This is why two 1 carat diamonds can look different in size.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-macro-measurement-detail.jpg\" alt=\"Diamond face-up size measurement detail.\"\/><figcaption>Face-up size depends on cut depth and shape. A shallow diamond faces up larger than a deep diamond of the same carat.<\/figcaption><\/figure>\n\n<!-- wp:heading --><h2>Which Shapes Offer the Best Face-Up Size?<\/h2><!-- \/wp:heading -->\n\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30b7\u30a7\u30a4\u30d7<\/th><th>Face-Up Size per Carat<\/th><th>Why<\/th><\/tr><\/thead><tbody>\n<tr><td>Marquise<\/td><td>Excellent<\/td><td>Extreme elongation creates maximum finger coverage<\/td><\/tr>\n<tr><td>Oval<\/td><td>Excellent<\/td><td>Elongated shape spreads weight across more length<\/td><\/tr>\n<tr><td>Pear<\/td><td>Excellent<\/td><td>Teardrop shape adds visual length<\/td><\/tr>\n<tr><td>Emerald<\/td><td>Very good<\/td><td>Broad step facets create wide spread<\/td><\/tr>\n<tr><td>Radiant<\/td><td>Good<\/td><td>Rectangular shape with good spread potential<\/td><\/tr>\n<tr><td>Round<\/td><td>Moderate<\/td><td>Compact shape, smaller face-up size per carat<\/td><\/tr>\n<tr><td>Cushion<\/td><td>Variable<\/td><td>Depends heavily on depth and faceting style<\/td><\/tr>\n<tr><td>Princess<\/td><td>Moderate<\/td><td>Square shape with compact footprint<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:paragraph -->\n<p><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Learn more about which shapes offer the best face-up size<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-buying-checklist-flatlay.jpg\" alt=\"Face-up size buying checklist.\"\/><figcaption>When evaluating face-up size, compare millimeter dimensions, check depth percentage, and consider the shape.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-decision-box\">\n  <h2>Quick Reference<\/h2>\n  <p><strong>For maximum face-up size per carat:<\/strong> choose marquise, oval, or pear.<\/p>\n  <p><strong>For a balance of face-up size and sparkle:<\/strong> choose oval or radiant.<\/p>\n  <p><strong>Always compare:<\/strong> length and width in millimeters, not just carat weight.<\/p>\n  <p><strong>Check:<\/strong> depth percentage \u2014 shallower diamonds face up larger.<\/p>\n  <p><a href=\"\/ja\/diamonds\/\">Compare lab grown diamonds<\/a>.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Common Mistakes<\/h2><!-- \/wp:heading -->\n<!-- wp:list -->\n<ul><li>Confusing carat weight with face-up size \u2014 they are not the same thing.<\/li>\n<li>Assuming all diamonds of the same carat have the same face-up size.<\/li>\n<li>Choosing a deep-cut diamond that faces up smaller than expected.<\/li>\n<li>Ignoring shape \u2014 elongated shapes offer more face-up size per carat.<\/li><\/ul>\n\n<!-- wp:heading --><h2>Myth vs Fact<\/h2><!-- \/wp:heading -->\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>Myth<\/th><th>Fact<\/th><\/tr><\/thead><tbody>\n<tr><td>Carat weight determines how big a diamond looks.<\/td><td>Face-up size depends on shape, cut, and depth \u2014 not just carat.<\/td><\/tr>\n<tr><td>Round diamonds have the best face-up size.<\/td><td>Elongated shapes like oval and marquise offer more face-up size per carat.<\/td><\/tr>\n<tr><td>Face-up size is the same as carat weight.<\/td><td>Face-up size measures visible surface area. Carat measures weight.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-faq-block\">\n<!-- wp:heading --><h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2><!-- \/wp:heading -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:image --><p>This guide explains what face-up size is, why it matters, and how to use it when comparing diamonds.<\/p>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-quick-answer\">\n  <strong>Quick Answer:<\/strong>\n  <p>Face-up size is the visible surface area of a diamond when viewed from above. It depends on the diamond&#8217;s shape, cut proportions, and depth \u2014 not just carat weight. Two diamonds of the same carat can have different face-up sizes. Elongated shapes like oval and marquise offer more face-up size per carat than round or cushion shapes.<\/p>\n<\/div>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-shape-size-comparison.jpg\" alt=\"Face-up size diamond shape comparison.\"\/><figcaption>Face-up size varies by shape and cut. Elongated diamonds usually offer more visible surface area per carat.<\/figcaption><\/figure>\n\n<!-- wp:heading --><h2>What Is Face-Up Size?<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size refers to the visible surface area of a diamond when you look at it directly from above. It is measured by the diamond&#8217;s width and length in millimeters. Carat weight tells you how much the diamond weighs. Face-up size tells you how large it actually looks.<\/p>\n<!-- wp:paragraph --><p>A diamond with a shallow cut spreads its weight across a wider area, creating a larger face-up size. A diamond with a deep cut concentrates weight downward, making it appear smaller from above. This is why two 1 carat diamonds can look different in size.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-macro-measurement-detail.jpg\" alt=\"Diamond face-up size measurement detail.\"\/><figcaption>Face-up size depends on cut depth and shape. A shallow diamond faces up larger than a deep diamond of the same carat.<\/figcaption><\/figure>\n\n<!-- wp:heading --><h2>Which Shapes Offer the Best Face-Up Size?<\/h2><!-- \/wp:heading -->\n\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30b7\u30a7\u30a4\u30d7<\/th><th>Face-Up Size per Carat<\/th><th>Why<\/th><\/tr><\/thead><tbody>\n<tr><td>Marquise<\/td><td>Excellent<\/td><td>Extreme elongation creates maximum finger coverage<\/td><\/tr>\n<tr><td>Oval<\/td><td>Excellent<\/td><td>Elongated shape spreads weight across more length<\/td><\/tr>\n<tr><td>Pear<\/td><td>Excellent<\/td><td>Teardrop shape adds visual length<\/td><\/tr>\n<tr><td>Emerald<\/td><td>Very good<\/td><td>Broad step facets create wide spread<\/td><\/tr>\n<tr><td>Radiant<\/td><td>Good<\/td><td>Rectangular shape with good spread potential<\/td><\/tr>\n<tr><td>Round<\/td><td>Moderate<\/td><td>Compact shape, smaller face-up size per carat<\/td><\/tr>\n<tr><td>Cushion<\/td><td>Variable<\/td><td>Depends heavily on depth and faceting style<\/td><\/tr>\n<tr><td>Princess<\/td><td>Moderate<\/td><td>Square shape with compact footprint<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:paragraph -->\n<p><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Learn more about which shapes offer the best face-up size<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-buying-checklist-flatlay.jpg\" alt=\"Face-up size buying checklist.\"\/><figcaption>When evaluating face-up size, compare millimeter dimensions, check depth percentage, and consider the shape.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-decision-box\">\n  <h2>Quick Reference<\/h2>\n  <p><strong>For maximum face-up size per carat:<\/strong> choose marquise, oval, or pear.<\/p>\n  <p><strong>For a balance of face-up size and sparkle:<\/strong> choose oval or radiant.<\/p>\n  <p><strong>Always compare:<\/strong> length and width in millimeters, not just carat weight.<\/p>\n  <p><strong>Check:<\/strong> depth percentage \u2014 shallower diamonds face up larger.<\/p>\n  <p><a href=\"\/ja\/diamonds\/\">Compare lab grown diamonds<\/a>.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Common Mistakes<\/h2><!-- \/wp:heading -->\n<!-- wp:list -->\n<ul><li>Confusing carat weight with face-up size \u2014 they are not the same thing.<\/li>\n<li>Assuming all diamonds of the same carat have the same face-up size.<\/li>\n<li>Choosing a deep-cut diamond that faces up smaller than expected.<\/li>\n<li>Ignoring shape \u2014 elongated shapes offer more face-up size per carat.<\/li><\/ul>\n\n<!-- wp:heading --><h2>Myth vs Fact<\/h2><!-- \/wp:heading -->\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>Myth<\/th><th>Fact<\/th><\/tr><\/thead><tbody>\n<tr><td>Carat weight determines how big a diamond looks.<\/td><td>Face-up size depends on shape, cut, and depth \u2014 not just carat.<\/td><\/tr>\n<tr><td>Round diamonds have the best face-up size.<\/td><td>Elongated shapes like oval and marquise offer more face-up size per carat.<\/td><\/tr>\n<tr><td>Face-up size is the same as carat weight.<\/td><td>Face-up size measures visible surface area. Carat measures weight.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-faq-block\">\n<!-- wp:heading --><h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2><!-- \/wp:heading -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:html -->\n<p>Two diamonds weigh exactly the same, but one looks noticeably larger on the finger. The difference is face-up size \u2014 the visible surface area when you look at the diamond from above. Understanding face-up size is the key to getting the most visual impact for your budget.<\/p>\n<!-- wp:paragraph --><p>This guide explains what face-up size is, why it matters, and how to use it when comparing diamonds.<\/p>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-quick-answer\">\n  <strong>Quick Answer:<\/strong>\n  <p>Face-up size is the visible surface area of a diamond when viewed from above. It depends on the diamond&#8217;s shape, cut proportions, and depth \u2014 not just carat weight. Two diamonds of the same carat can have different face-up sizes. Elongated shapes like oval and marquise offer more face-up size per carat than round or cushion shapes.<\/p>\n<\/div>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-shape-size-comparison.jpg\" alt=\"Face-up size diamond shape comparison.\"\/><figcaption>Face-up size varies by shape and cut. Elongated diamonds usually offer more visible surface area per carat.<\/figcaption><\/figure>\n\n<!-- wp:heading --><h2>What Is Face-Up Size?<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size refers to the visible surface area of a diamond when you look at it directly from above. It is measured by the diamond&#8217;s width and length in millimeters. Carat weight tells you how much the diamond weighs. Face-up size tells you how large it actually looks.<\/p>\n<!-- wp:paragraph --><p>A diamond with a shallow cut spreads its weight across a wider area, creating a larger face-up size. A diamond with a deep cut concentrates weight downward, making it appear smaller from above. This is why two 1 carat diamonds can look different in size.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-macro-measurement-detail.jpg\" alt=\"Diamond face-up size measurement detail.\"\/><figcaption>Face-up size depends on cut depth and shape. A shallow diamond faces up larger than a deep diamond of the same carat.<\/figcaption><\/figure>\n\n<!-- wp:heading --><h2>Which Shapes Offer the Best Face-Up Size?<\/h2><!-- \/wp:heading -->\n\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30b7\u30a7\u30a4\u30d7<\/th><th>Face-Up Size per Carat<\/th><th>Why<\/th><\/tr><\/thead><tbody>\n<tr><td>Marquise<\/td><td>Excellent<\/td><td>Extreme elongation creates maximum finger coverage<\/td><\/tr>\n<tr><td>Oval<\/td><td>Excellent<\/td><td>Elongated shape spreads weight across more length<\/td><\/tr>\n<tr><td>Pear<\/td><td>Excellent<\/td><td>Teardrop shape adds visual length<\/td><\/tr>\n<tr><td>Emerald<\/td><td>Very good<\/td><td>Broad step facets create wide spread<\/td><\/tr>\n<tr><td>Radiant<\/td><td>Good<\/td><td>Rectangular shape with good spread potential<\/td><\/tr>\n<tr><td>Round<\/td><td>Moderate<\/td><td>Compact shape, smaller face-up size per carat<\/td><\/tr>\n<tr><td>Cushion<\/td><td>Variable<\/td><td>Depends heavily on depth and faceting style<\/td><\/tr>\n<tr><td>Princess<\/td><td>Moderate<\/td><td>Square shape with compact footprint<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:paragraph -->\n<p><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Learn more about which shapes offer the best face-up size<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-buying-checklist-flatlay.jpg\" alt=\"Face-up size buying checklist.\"\/><figcaption>When evaluating face-up size, compare millimeter dimensions, check depth percentage, and consider the shape.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-decision-box\">\n  <h2>Quick Reference<\/h2>\n  <p><strong>For maximum face-up size per carat:<\/strong> choose marquise, oval, or pear.<\/p>\n  <p><strong>For a balance of face-up size and sparkle:<\/strong> choose oval or radiant.<\/p>\n  <p><strong>Always compare:<\/strong> length and width in millimeters, not just carat weight.<\/p>\n  <p><strong>Check:<\/strong> depth percentage \u2014 shallower diamonds face up larger.<\/p>\n  <p><a href=\"\/ja\/diamonds\/\">Compare lab grown diamonds<\/a>.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Common Mistakes<\/h2><!-- \/wp:heading -->\n<!-- wp:list -->\n<ul><li>Confusing carat weight with face-up size \u2014 they are not the same thing.<\/li>\n<li>Assuming all diamonds of the same carat have the same face-up size.<\/li>\n<li>Choosing a deep-cut diamond that faces up smaller than expected.<\/li>\n<li>Ignoring shape \u2014 elongated shapes offer more face-up size per carat.<\/li><\/ul>\n\n<!-- wp:heading --><h2>Myth vs Fact<\/h2><!-- \/wp:heading -->\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>Myth<\/th><th>Fact<\/th><\/tr><\/thead><tbody>\n<tr><td>Carat weight determines how big a diamond looks.<\/td><td>Face-up size depends on shape, cut, and depth \u2014 not just carat.<\/td><\/tr>\n<tr><td>Round diamonds have the best face-up size.<\/td><td>Elongated shapes like oval and marquise offer more face-up size per carat.<\/td><\/tr>\n<tr><td>Face-up size is the same as carat weight.<\/td><td>Face-up size measures visible surface area. Carat measures weight.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-faq-block\">\n<!-- wp:heading --><h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2><!-- \/wp:heading -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Two diamonds weigh exactly the same, but one looks noticeably larger on the finger. The difference is face-up size \u2014 the visible surface area when you look at the diamond from above. Understanding face-up size is the key to getting the most visual impact for your budget.<\/p>\n<!-- wp:paragraph --><p>This guide explains what face-up size is, why it matters, and how to use it when comparing diamonds.<\/p>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-quick-answer\">\n  <strong>Quick Answer:<\/strong>\n  <p>Face-up size is the visible surface area of a diamond when viewed from above. It depends on the diamond&#8217;s shape, cut proportions, and depth \u2014 not just carat weight. Two diamonds of the same carat can have different face-up sizes. Elongated shapes like oval and marquise offer more face-up size per carat than round or cushion shapes.<\/p>\n<\/div>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-shape-size-comparison.jpg\" alt=\"Face-up size diamond shape comparison.\"\/><figcaption>Face-up size varies by shape and cut. Elongated diamonds usually offer more visible surface area per carat.<\/figcaption><\/figure>\n\n<!-- wp:heading --><h2>What Is Face-Up Size?<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size refers to the visible surface area of a diamond when you look at it directly from above. It is measured by the diamond&#8217;s width and length in millimeters. Carat weight tells you how much the diamond weighs. Face-up size tells you how large it actually looks.<\/p>\n<!-- wp:paragraph --><p>A diamond with a shallow cut spreads its weight across a wider area, creating a larger face-up size. A diamond with a deep cut concentrates weight downward, making it appear smaller from above. This is why two 1 carat diamonds can look different in size.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-macro-measurement-detail.jpg\" alt=\"Diamond face-up size measurement detail.\"\/><figcaption>Face-up size depends on cut depth and shape. A shallow diamond faces up larger than a deep diamond of the same carat.<\/figcaption><\/figure>\n\n<!-- wp:heading --><h2>Which Shapes Offer the Best Face-Up Size?<\/h2><!-- \/wp:heading -->\n\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30b7\u30a7\u30a4\u30d7<\/th><th>Face-Up Size per Carat<\/th><th>Why<\/th><\/tr><\/thead><tbody>\n<tr><td>Marquise<\/td><td>Excellent<\/td><td>Extreme elongation creates maximum finger coverage<\/td><\/tr>\n<tr><td>Oval<\/td><td>Excellent<\/td><td>Elongated shape spreads weight across more length<\/td><\/tr>\n<tr><td>Pear<\/td><td>Excellent<\/td><td>Teardrop shape adds visual length<\/td><\/tr>\n<tr><td>Emerald<\/td><td>Very good<\/td><td>Broad step facets create wide spread<\/td><\/tr>\n<tr><td>Radiant<\/td><td>Good<\/td><td>Rectangular shape with good spread potential<\/td><\/tr>\n<tr><td>Round<\/td><td>Moderate<\/td><td>Compact shape, smaller face-up size per carat<\/td><\/tr>\n<tr><td>Cushion<\/td><td>Variable<\/td><td>Depends heavily on depth and faceting style<\/td><\/tr>\n<tr><td>Princess<\/td><td>Moderate<\/td><td>Square shape with compact footprint<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:paragraph -->\n<p><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Learn more about which shapes offer the best face-up size<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-buying-checklist-flatlay.jpg\" alt=\"Face-up size buying checklist.\"\/><figcaption>When evaluating face-up size, compare millimeter dimensions, check depth percentage, and consider the shape.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-decision-box\">\n  <h2>Quick Reference<\/h2>\n  <p><strong>For maximum face-up size per carat:<\/strong> choose marquise, oval, or pear.<\/p>\n  <p><strong>For a balance of face-up size and sparkle:<\/strong> choose oval or radiant.<\/p>\n  <p><strong>Always compare:<\/strong> length and width in millimeters, not just carat weight.<\/p>\n  <p><strong>Check:<\/strong> depth percentage \u2014 shallower diamonds face up larger.<\/p>\n  <p><a href=\"\/ja\/diamonds\/\">Compare lab grown diamonds<\/a>.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Common Mistakes<\/h2><!-- \/wp:heading -->\n<!-- wp:list -->\n<ul><li>Confusing carat weight with face-up size \u2014 they are not the same thing.<\/li>\n<li>Assuming all diamonds of the same carat have the same face-up size.<\/li>\n<li>Choosing a deep-cut diamond that faces up smaller than expected.<\/li>\n<li>Ignoring shape \u2014 elongated shapes offer more face-up size per carat.<\/li><\/ul>\n\n<!-- wp:heading --><h2>Myth vs Fact<\/h2><!-- \/wp:heading -->\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>Myth<\/th><th>Fact<\/th><\/tr><\/thead><tbody>\n<tr><td>Carat weight determines how big a diamond looks.<\/td><td>Face-up size depends on shape, cut, and depth \u2014 not just carat.<\/td><\/tr>\n<tr><td>Round diamonds have the best face-up size.<\/td><td>Elongated shapes like oval and marquise offer more face-up size per carat.<\/td><\/tr>\n<tr><td>Face-up size is the same as carat weight.<\/td><td>Face-up size measures visible surface area. Carat measures weight.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-faq-block\">\n<!-- wp:heading --><h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2><!-- \/wp:heading -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content --><!-- \/wp:paragraph --><!-- wp:post-content --><!-- wp:html -->\n<style>.vantyre-article-box{background:#faf7f2;border:1px solid #eadfd2;border-radius:14px;padding:22px;margin:28px 0;}.vantyre-quick-answer{border-left:4px solid #b89768;}.vantyre-note-box{background:#fbfbfb;border:1px solid #e8e2da;border-radius:14px;padding:20px;margin:26px 0;}.vantyre-article-image{margin:34px 0 10px;}.vantyre-article-image img{border-radius:14px;}.vantyre-faq-block h3{margin-top:24px;}.vantyre-related-reading{background:#fafafa;border:1px solid #e7e7e7;border-radius:14px;padding:22px;margin-top:34px;}<\/style>\n<!-- \/wp:html -->\n\n<!-- wp:paragraph -->\n<p>Two diamonds weigh exactly the same, but one looks noticeably larger on the finger. The difference is face-up size \u2014 the visible surface area when you look at the diamond from above. Understanding face-up size is the key to getting the most visual impact for your budget.<\/p>\n<!-- wp:paragraph --><p>This guide explains what face-up size is, why it matters, and how to use it when comparing diamonds.<\/p>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-quick-answer\">\n  <strong>Quick Answer:<\/strong>\n  <p>Face-up size is the visible surface area of a diamond when viewed from above. It depends on the diamond&#8217;s shape, cut proportions, and depth \u2014 not just carat weight. Two diamonds of the same carat can have different face-up sizes. Elongated shapes like oval and marquise offer more face-up size per carat than round or cushion shapes.<\/p>\n<\/div>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-shape-size-comparison.jpg\" alt=\"Face-up size diamond shape comparison.\"\/><figcaption>Face-up size varies by shape and cut. Elongated diamonds usually offer more visible surface area per carat.<\/figcaption><\/figure>\n\n<!-- wp:heading --><h2>What Is Face-Up Size?<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size refers to the visible surface area of a diamond when you look at it directly from above. It is measured by the diamond&#8217;s width and length in millimeters. Carat weight tells you how much the diamond weighs. Face-up size tells you how large it actually looks.<\/p>\n<!-- wp:paragraph --><p>A diamond with a shallow cut spreads its weight across a wider area, creating a larger face-up size. A diamond with a deep cut concentrates weight downward, making it appear smaller from above. This is why two 1 carat diamonds can look different in size.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-macro-measurement-detail.jpg\" alt=\"Diamond face-up size measurement detail.\"\/><figcaption>Face-up size depends on cut depth and shape. A shallow diamond faces up larger than a deep diamond of the same carat.<\/figcaption><\/figure>\n\n<!-- wp:heading --><h2>Which Shapes Offer the Best Face-Up Size?<\/h2><!-- \/wp:heading -->\n\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30b7\u30a7\u30a4\u30d7<\/th><th>Face-Up Size per Carat<\/th><th>Why<\/th><\/tr><\/thead><tbody>\n<tr><td>Marquise<\/td><td>Excellent<\/td><td>Extreme elongation creates maximum finger coverage<\/td><\/tr>\n<tr><td>Oval<\/td><td>Excellent<\/td><td>Elongated shape spreads weight across more length<\/td><\/tr>\n<tr><td>Pear<\/td><td>Excellent<\/td><td>Teardrop shape adds visual length<\/td><\/tr>\n<tr><td>Emerald<\/td><td>Very good<\/td><td>Broad step facets create wide spread<\/td><\/tr>\n<tr><td>Radiant<\/td><td>Good<\/td><td>Rectangular shape with good spread potential<\/td><\/tr>\n<tr><td>Round<\/td><td>Moderate<\/td><td>Compact shape, smaller face-up size per carat<\/td><\/tr>\n<tr><td>Cushion<\/td><td>Variable<\/td><td>Depends heavily on depth and faceting style<\/td><\/tr>\n<tr><td>Princess<\/td><td>Moderate<\/td><td>Square shape with compact footprint<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:paragraph -->\n<p><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Learn more about which shapes offer the best face-up size<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-buying-checklist-flatlay.jpg\" alt=\"Face-up size buying checklist.\"\/><figcaption>When evaluating face-up size, compare millimeter dimensions, check depth percentage, and consider the shape.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-article-box vantyre-decision-box\">\n  <h2>Quick Reference<\/h2>\n  <p><strong>For maximum face-up size per carat:<\/strong> choose marquise, oval, or pear.<\/p>\n  <p><strong>For a balance of face-up size and sparkle:<\/strong> choose oval or radiant.<\/p>\n  <p><strong>Always compare:<\/strong> length and width in millimeters, not just carat weight.<\/p>\n  <p><strong>Check:<\/strong> depth percentage \u2014 shallower diamonds face up larger.<\/p>\n  <p><a href=\"\/ja\/diamonds\/\">Compare lab grown diamonds<\/a>.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Common Mistakes<\/h2><!-- \/wp:heading -->\n<!-- wp:list -->\n<ul><li>Confusing carat weight with face-up size \u2014 they are not the same thing.<\/li>\n<li>Assuming all diamonds of the same carat have the same face-up size.<\/li>\n<li>Choosing a deep-cut diamond that faces up smaller than expected.<\/li>\n<li>Ignoring shape \u2014 elongated shapes offer more face-up size per carat.<\/li><\/ul>\n\n<!-- wp:heading --><h2>Myth vs Fact<\/h2><!-- \/wp:heading -->\n<!-- wp:table -->\n<figure class=\"wp-block-table\"><table><thead><tr><th>Myth<\/th><th>Fact<\/th><\/tr><\/thead><tbody>\n<tr><td>Carat weight determines how big a diamond looks.<\/td><td>Face-up size depends on shape, cut, and depth \u2014 not just carat.<\/td><\/tr>\n<tr><td>Round diamonds have the best face-up size.<\/td><td>Elongated shapes like oval and marquise offer more face-up size per carat.<\/td><\/tr>\n<tr><td>Face-up size is the same as carat weight.<\/td><td>Face-up size measures visible surface area. Carat measures weight.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-faq-block\">\n<!-- wp:heading --><h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2><!-- \/wp:heading -->\n<!-- wp:heading {\"level\":3} --><h3>What does face-up size mean in diamonds?<\/h3><!-- wp:paragraph --><p>Face-up size is the visible surface area of a diamond when viewed from above, measured in millimeters.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Which diamond shape has the best face-up size?<\/h3><!-- wp:paragraph --><p>Marquise, oval, and pear diamonds offer the best face-up size per carat because of their elongated shape.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Does cut affect face-up size?<\/h3><!-- wp:paragraph --><p>Yes. A shallow-cut diamond faces up larger. A deep-cut diamond faces up smaller at the same carat weight.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>How do I compare face-up size between two diamonds?<\/h3><!-- wp:paragraph --><p>Compare the length and width in millimeters from the certificate. Ignore carat weight for the size comparison.<\/p>\n<!-- wp:heading {\"level\":3\"} --><h3>Is face-up size more important than carat?<\/h3><!-- wp:paragraph --><p>If visible size matters to you, face-up size is more useful than carat weight for comparing diamonds.<\/p>\n<\/div>\n\n<!-- wp:heading --><h2>Final Buying Note<\/h2><!-- \/wp:heading -->\n<!-- wp:paragraph -->\n<p>Face-up size is one of the most useful concepts for getting the best visual value from your diamond budget. By choosing an elongated shape, checking millimeter measurements, and avoiding overly deep cuts, you can maximize the visible size of your diamond without upgrading to a higher carat weight. Always compare actual dimensions \u2014 not just the number on the scale.<\/p>\n<!-- wp:paragraph -->\n<p>Browse our <a href=\"\/ja\/diamonds\/\">lab grown diamond inventory<\/a>, explore <a href=\"\/ja\/jewelry\/rings\/\">ring styles<\/a>, or <a href=\"\/ja\/custom-jewelry\/\">request a custom design<\/a>.<\/p>\n\n<!-- wp:image {\"sizeSlug\":\"large\"} -->\n<figure class=\"wp-block-image size-large vantyre-article-image\"><img decoding=\"async\" src=\"https:\/\/chinalabgrowndiamond.com\/wp-content\/uploads\/2026\/07\/dc05-lifestyle-on-hand.jpg\" alt=\"Diamond face-up size ring on hand.\"\/><figcaption>Understanding face-up size helps you choose a diamond that looks as large as possible for its carat weight.<\/figcaption><\/figure>\n\n<!-- wp:html -->\n<div class=\"vantyre-related-reading\">\n  <h2>Related Reading<\/h2>\n  <ul>\n    <li><a href=\"\/ja\/which-diamond-shape-looks-biggest\/\">Which Shape Looks Biggest?<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-measurements-explained\/\">Diamond Measurements Explained<\/a><\/li>\n    <li><a href=\"\/ja\/carat-weight-vs-diamond-size\/\">Carat Weight vs Diamond Size<\/a><\/li>\n    <li><a href=\"\/ja\/diamond-carat-size-chart-mm-by-shape\/\">Diamond Carat Size Chart<\/a><\/li>\n  <\/ul>\n<\/div>\n<!-- wp:paragraph --><p>\u00a9 VANTYRE Jewelry Guide<\/p><!-- \/wp:paragraph -->\n<!-- \/wp:post-content -->","protected":false},"excerpt":{"rendered":"<p>Learn what face-up size means in diamonds, which shapes offer the best face-up size per carat, and how to use it when comparing diamonds.<\/p>","protected":false},"author":0,"featured_media":14912,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70],"tags":[166,160,161,155],"class_list":["post-14917","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diamond-education","tag-diamond-buying-guide","tag-diamond-carat","tag-diamond-size","tag-lab-grown-diamond"],"_links":{"self":[{"href":"https:\/\/chinalabgrowndiamond.com\/ja\/wp-json\/wp\/v2\/posts\/14917","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chinalabgrowndiamond.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chinalabgrowndiamond.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/chinalabgrowndiamond.com\/ja\/wp-json\/wp\/v2\/comments?post=14917"}],"version-history":[{"count":0,"href":"https:\/\/chinalabgrowndiamond.com\/ja\/wp-json\/wp\/v2\/posts\/14917\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chinalabgrowndiamond.com\/ja\/wp-json\/wp\/v2\/media\/14912"}],"wp:attachment":[{"href":"https:\/\/chinalabgrowndiamond.com\/ja\/wp-json\/wp\/v2\/media?parent=14917"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chinalabgrowndiamond.com\/ja\/wp-json\/wp\/v2\/categories?post=14917"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chinalabgrowndiamond.com\/ja\/wp-json\/wp\/v2\/tags?post=14917"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}