Titanium

The carat weight of a diamond is not a measurement of size; it is a unit of mass. It stands to reason, however, that two diamonds cut to the same proportions and shape, will be the same size. Since larger diamonds are more rare and occur less frequently in nature, those of a heavier carat weight are more valuable.

Diamond weight is expressed in "carats" and "points". One hundred points equal one carat, 50 points measure 1/2 carat, 25 points equal 1/4 carat, etc. Although carat weight is the most obvious factor in the grading of a diamond, bigger is not always better. Diamonds International offers diamonds of all carat weights.

The chart below will give you an idea of the approximate size of a well-cut round diamond.