Where the largest rough diamond ever found came out of the wall
A carrot-shaped volcanic pipe 40 kilometres east of Pretoria, opened in 1902 as the Premier Mine and renamed for its centenary in 2003. On 25 January 1905 the surface manager, Frederick Wells, found the Cullinan diamond in its wall: 3,106.75 carats, the largest rough gem-quality diamond ever found, later cut into the stones set in the British crown jewels. That was not a one-off. The mine has produced more than 750 stones over 100 carats and more than a quarter of all the diamonds in the world above 400 carats, and it is the only significant source of blue diamonds anywhere. The pipe covers 32 hectares at surface and is worked underground today by Petra Diamonds, with the town of Cullinan at the gate.
Gauteng, South Africa
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