Diamond Shape And Size Comparison
Since Carat is a weight, two diamonds of the same carat may be different millimeter measurements. This is intended as a general reference, since all diamonds are unique. Also keep in mind that depending on your computer monitor, the images may look much smaller or larger than intended. Use a ruler to get a better idea of the millimeter lengths provided.
Round Diamonds, Princess or Square Diamonds:
Oval Diamonds Carat Sizes, Cushion Diamond Sizes: