The Enigma: Mysterious black diamond up for auction - BBC News

The mysterious gem, known as The Enigma, is believed to be the largest cut diamond on Earth.

The Enigma' - a 555.55 carat Fancy Black Diamond, The Enigma: 555.55 Carat Fancy Black Diamond, 2022

The Enigma: Mysterious black diamond up for auction

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Mystery black diamond called 'The Enigma' goes up for auction

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