Carat Weight of a Diamond
Most people think of a carat in terms of the size of the diamond, but it is actually based on weight. The weight of a diamond is traditionally measured in terms of carat, a unit of weight with 1 carat equaling .20 grams. Each carat is divided into 100 points, allowing for a very precise measurement of the diamond. For instance a diamond that weighs .50 carat may be referred to as a “half-carat” or a “fifty-pointer”.
Two diamonds of equal carat weight will have significantly different costs because of the other factors: cut, color and clarity. As a diamond increases in size and carat weight, the price will increase at an increasing rate because larger diamonds are more rare and thus more valuable.