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The Enigma: Billion-year-old black diamond sold for £3.16m
Black Diamond, Washington - Wikipedia
55-Face Black Diamond, Largest Ever Cut, Sells for $4.3 Million In Crypto
A 555-Carat Black Diamond Is Going Up for Auction. Did It Really Come From Space?
geneva: 228 carat egg-sized diamond fetches over $21 mn, 205 carat yellow stone sells for more than $14 mn at Geneva auction - The Economic Times
The Enigma: 555.55 Carat Fancy Black Diamond, 2022
Enigma Black Diamond Sells For $4.3 Million At Auction
The Enigma: 555.55 Carat Fancy Black Diamond, 2022
The Enigma: Mysterious black diamond up for auction
Rare diamond, blasted from outer space, could fetch $6.8M