All diamonds are measured in carats (not to be confused with Karats, which are used to measure the purity of gold). By definition, 1 carat is exactly 0.20 milligrams. The term points is also used, especially for stones that weigh less than 1/2 a carat. For example, a 50 point diamond is the equivalent of a 1/2 carat stone (0.50). Large diamonds, which are found infrequently in nature, flaunt the stone's delicate color and exquisite cut, hence the overall brilliance. Though larger diamonds are highly sought, a diamond of lesser size may have higher clarity and color or a more precise cut and be of equal value.