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Sotheby's London Rocks sale

A Sotheby's employee shows the world's largest round fancy vivid blue diamond, a 7.59 Carat stone, estimated in excess of 12 million at Sotheby's, central London, during a preview of the auction house's forthcoming London Rocks sale in October, when two diamonds, the white diamond at 118.28 carats, the largest D colour Flawless diamond, estimated between 18-22 million and round fancy vivid blue diamond are expected to fetch over 30 million between them at the sale.

Largest flawless white diamond up for auction

At Sotheby's forthcoming London Rocks sale in October, two diamonds, a 118.28 carat stone white diamond and the world's largest round fancy vivid blue diamond, a 7.59 Carat stone, estimated in excess of £12 million, are expected to fetch over £30 million between them at the sale.