A carat is a unit of measurement and it’s the unit used to weigh a diamond. One carat is equal to 200 milligrams, or 0.2 grams.
The word “carat” is taken from the carob seeds that people once used to balance scales.
NOTE: “Karat” is a different word that is used to describe he purity of gold.
Large diamonds have a greater cost per carat and the price of a diamond rises exponentionaly to its size (e.g., a 2-carat diamond will cost more per carat than a 1-carat diamond of equal grade).
For a a printable diamond size comparison chart that displays rings on the hand, visit our Diamond Size Chart page.
Read more about the Four Cs of Diamonds
4Cs of Diamond Grading | Diamond Cut | Diamond Clarity | Diamond Color | Carat Weight | Diamond Certificates | Diamond Size Chart | Diamond Fluorescence | Diamond Ring Settings | Diamond Glossary
General Shapes Information | Asscher Cut Diamonds | Cushion Cut Diamonds | Emerald Cut Diamonds | Heart Shaped Diamonds | Marquise Cut Diamonds | Oval Diamonds | Pear Shaped Diamonds | Princess Cut Diamonds | Radiant Cut Diamonds | Round Brilliant Diamonds