A Guide To Diamond Carat Sizes


We all dream of dripping in diamonds, and the bigger they are the better right? But do we know a carat when we see it?

Many people don’t realize it, but “carat”, derived from the seed of the Carab tree which was used as a measuring standard, indicates the weight of a diamond and not its size. The diameter sizes of mined diamonds (of the same carat weight) can vary depending on the proportions to which a particular diamond was cut. Most mined stones are not cut to perfect proportions in order to avoid showing the natural flaws that are prevalent within the rough gem as it is formed.

A diamond that is not perfectly cut (i.e. with proportions that are too deep or too shallow) will not have the ideal angles necessary to refract light in a way that creates the best possible sparkle.

But what about Tru-Diamonds?

Tru-Diamonds, because they are formed under controlled conditions, have absolutely no flaws and are invariably cut to perfect proportions by Swiss master gem polishers. That’s why Tru-Diamonds have the fire and sparkle of the very finest top-grade mined diamonds. It also means that Tru-Diamonds carat sizes are identical to those of perfectly cut mined diamonds.

To give you a guide to Tru-Diamonds carat sizes that’s easy to relate to we’ve shown them alongside the new British Pound coin. The coin measures 23mm from side to side.