Largest flawless white diamond up for auction

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Sotheby's London Rocks sale

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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.

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