What’s A Diamond Carat, To Begin With? One of the most misunderstood things about diamonds is the term “carat.” A carat is the weight of a diamond, not its size. Contrary to what many people think, large carat weight isn’t always better than small carat weight. While it is for the fact that a bigger rock is a status symbol, carat weight has nothing to for with the sparkle of the rock. In fact, raw