SEE | A white diamond found in SA has become the largest ever to be sold at an auction - News24

The Rock, the biggest white diamond ever auctioned, sold for a hammer price of 18.6 million Swiss francs on Wednesday, far short of the record for such a jewel.

The Rock, the biggest white diamond ever auctioned, sold for a hammer price of 18.6 million Swiss francs ($18.8 million) on Wednesday, far short of the record for such a jewel. The 228.31-carat ston… [+1294 chars]

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