Diamond Carat Weight

Carat weight on hand

Despite the huge advantages to purchasing an engagement ring online, such as the vast selection and far superior value for money, there are still some challenges. One of the most significant challenges is to visualize what the diamond will look like when worn - specifically, how big the stone is for each shape and carat weight. Below shows exact proportions for average sized stones for each of the 10 popular diamond shapes on a lady's hand with a 2mm ring. Holding your own hand to the screen will help show the scale.

Carat weight mm chart

Against popular belief, the carat of a diamond isn't the size, rather the weight. Generally speaking, the higher the carat, the larger the stone, but this depends largely on the way the diamond is cut. With round diamonds, there are ideal proportions (versus a shallow or deep cut which are less desirable), however, with other shapes, there are no strict rules. Below is a chart showing the average proportions of different shaped diamonds and carat weights in mm.