Diamond Carat Weight*

One carat equals 200 milligrams in weight. For diamonds under one carat, each carat is divided into 100 points — similar to pennies in a dollar. 0.75 ct. = 75 points, 1/2 ct. = 50 points.

The following illustrations are proportional but not necessarily to scale:

*from the brochure “The 4Cs of Diamond Quality” © Gemological Institute of America