Larger diamonds are found relatively infrequently in nature. What also makes a bigger diamond so desirable is that it shows off a stone's fine color and cut, and therefore it's brilliance, to it's best advantage.

A diamond's size is measured in carat weight, and each carat is equal to 100 points. A .75 carat diamond is the same as a 75-point diamond or a 3/4 carat stone.

While larger diamonds are highly prized, diamonds of equal size may vary widely in value and brilliance, depending on their qualities of clarity, cut and color.