World’s largest uncut diamond on auction in London
The world’s largest uncut diamond is expected to be sold for more than £52m in an unprecedented auction in London.
The Lesedi la Rona, almost the size of a tennis ball, was unearthed in Botswana in November. The rough diamond is 1,109 carats and believed to be more than 2.5 billion years old.
The Mayfair auction, which is the first time a rough diamond of such a size has gone on public sale, takes place at Sotheby’s later. The Lesedi la Rona, which means ‘our light’ in the Tswana language spoken in Botswana, was discovered by Lucara Diamond Corp’s Karowe mine.
David Bennett, worldwide chairman of Sotheby’s jewellery division, said the diamond’s discovery is “the find of a lifetime”.
“Every aspect of this auction is unprecedented. Not only is the rough superlative in size and quality, but no rough even remotely of this scale has ever been offered before at public auction,” he said.
According to a study by the Gemological Institute of America, the rough diamond’s colour and transparency “exemplify” type IIA diamonds. Stones in this group are “the most chemically pure and often show extraordinary optical transparency”.
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