The world’s largest diamond was found in the Premier Mine in Pretoria, South Africa on 25 January 1905.

The 3,106-carat stone weighed 1.33 pounds and was called the ‘Cullinan’ after the owner of the mine. It was later cut into nine large stones and about 100 smaller ones; the largest, the 530.2 carat Cullinan I or Great Star of Africa, is the world’s largest colourless cut diamond and can be seen on top of the Queen of England’s Septre with the Cross in the Tower of London. The world’s leading diamond company, De Beers, was set up in Kimberley South Africa by Cecil Rhodes in 1881. Today the company operates all over the world and sells more than a third of the world’s rough diamonds. South African diamond mines account for 9.10 percent of the world’s diamonds.