How big is the biggest diamond in the world?

Diaomnds, like other gems, are measured in carats. (Not carrots, those are for rabbits.) A carat weights 0.2 grams. The largest fine quality, coloress diamond ever found was called "The Cullian." It was mined in south Africa and weight 3,106 carats. It was cut into 106 jewels and produced the finest, largest gemstone ever, weighing 530.2 carats.