How big is the biggest diamond in the world?

Diamonds are measured in Carats (not carrot). A carat weighs 0.2 grams. The largest fine quality, colorless diamond ever found was called “The Cullinan”. It was mined in South Africa and weighed 3,106 carats. It was cut into 106 jewels and produced the finest, largest gemstone ever, weighing 530.2 carats.