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Sotheby's London Rocks sale

A Sotheby's employee holds the white diamond at 118.28 carats, the largest D colour Flawless diamond, estimated between £18-22 million, during a preview of the auction house's forthcoming London Rocks sale in October, when two diamonds, the white diamond and the worlds 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.

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.