Quick Answer: What Is The Largest Diamond Company In The World?

De Beers

Who owns most of the world’s diamonds?

Oppenheimer

Who controls the diamond market?

De Beers

How much would the Cullinan diamond be worth today?

The Cullinan diamond is now mounted on the head with sticks Cross, and is the largest rough gem-quality diamond ever found, at 3,106,75 carat with 621.35 g. Polishing stones from the largest gems named Cullinan I or Star Africa First, and at 530.2 carats (106.0 g). The price of this diamond is about $ 400 million.