What is kt diamond?

kt (or Karat/Carat) is the measurement used used on gems and pearls. A carat in gems and pearls is measuring the mass of the item (a single carat is equal to 200 milligrams).

A carob seed was originally used in measuring the mass of these objects hence the term carat.

Please note, a kt in gold is different than a kt in diamonds. A carat in gold is referring to the purity of the item and not its mass.

First answer by JaysOCD. Last edit by JaysOCD. Contributor trust: 2 [recommend contributor]. Question popularity: 1 [recommend question]