A classic choice, the Round Brilliant cut is renowned for its exceptional sparkle and fire, and is the most popular diamond shape.
Diamond Size Chart and Comparison
Find and compare diamond shapes and sizes and learn about the ideal proportions each diamond should have. Diamond Size Chart is a useful online tool to help you pick the best and most brilliant diamond or engagement ring for your budget.
Diamond Sizes in MM
Diamond size charts are very useful for gemologists and jewelers, but also for anyone who wants to compare the size of a specific diamond shape across different carat weights.
To help you find the perfect diamond for your needs, we used AI to analyze millions of diamonds and created a diamond shape guide for each of the most popular diamond cuts.
You'll be able to find details on the ideal proportions for a given diamond shape and carat weight, and check that the dimensions of the stone are adequate to make sure it looks as brilliant as possible.
These charts will give you pre-calculated carat to mm conversions, as well as recommended length-to-width ratios, depth percentages, table percentages and more.
The Princess cut is a modern favourite, offering a unique square shape and plenty of shine.
The Emerald cut is a timeless classic, with its rectangular shape and step cut facets creating a captivating sparkle.
The Asscher cut is a truly unique diamond, with its X-shaped facets and square shape creating a mesmerizing effect.
The Radiant cut is a combination of the Round and Emerald cuts, offering the sparkle of the former and the rectangular shape of the latter.
The Cushion cut has an elegant and romantic shape, with its rounded corners and beautiful sparkle.
