Diamond Size Chart

Your Diamond, Your Size: A Guide to Finding the Perfect Fit

The measurements provided below are real examples to help you visualize diamond sizes and their corresponding carat weights. Remember, each diamond is unique, so these are just guidelines to help you find the perfect fit for your special piece.When shopping for a diamond, one of the most common questions is: “How big will it actually look?” While carat weight is an important factor in determining the size of a diamond, it doesn’t tell the whole story. Two diamonds with the same carat weight can appear quite different depending on their cut, shape, and even how they're set in a ring.

Carat	Round	Oval	Marquise	Emerald	Radiant	Asscher	Pear
0.25 ct	4.0 mm	5×3 mm	6×3 mm	5×3 mm	5×4 mm	3.8 mm	5×3 mm
0.5 ct	5.1 mm	6×4 mm	7×3.5 mm	6×4 mm	6×5 mm	4.5 mm	6×4 mm
0.75 ct	5.8 mm	7×5 mm	8×4 mm	7×5 mm	7×5.5 mm	5.2 mm	7×5 mm
1.0 ct	6.4 mm	8×6 mm	9×4.5 mm	7.5×5.5 mm	7.5×6 mm	5.5 mm	8×5 mm
1.5 ct	7.3 mm	9×7 mm	11×5.5 mm	8.5×6.5 mm	8.5×7 mm	mm	9.5×6.5 mm
2.0 ct	8.1 mm	10×8 mm	12×6 mm	9.5×7.5 mm	9.5×8 mm	7 mm	10×7 mm
2.5 ct	8.9 mm	11×9 mm	13×6.5 mm	10×8 mm	10×8.5 mm	7.5 mm	11×7.5 mm
3.0 ct	9.3 mm	12×10 mm	14×7 mm	11×9 mm	11×9.5 mm	8 mm	12×8 mm
3.5 ct	9.75 mm	12.5×10.5 mm	15×7.5 mm	11.5×9.5 mm	11.5×10 mm	8.4 mm	13×8.5 mm
4.0 ct	10.1 mm	13×11 mm	16×8 mm	12×10 mm	12×10.5 mm	8.8 mm	14×9 mm

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