Carat Weight
Carat Weight is the standard measurement for diamond size. Weight is measured in carats. Every carat is divided into 100 “points,” so a 50 point diamond actually weighs .50 carats and would be considered a 1/2 carat. However, two diamonds of equal weight can have very unequal value, depending on their cut, color and clarity.

Diamonds sizes are relative to each other, due to screen resolutions.