This Extremely Rare 10-Carat Blue Diamond Could Fetch $20 Million at Auction
The extremely rare, 10-carat Mediterranean Blue diamond could fetch a whopping $20 million at Sotheby's High Jewelry auction ...
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World's rare $20 million blue diamond to be unveiled in Abu Dhabi
Fashioned from a 31.94-carat rough diamond discovered at South Africa’s famed ... at Sotheby’s High Jewelry Sale in Geneva on May 13. Given the rarity of Fancy Vivid Blue diamonds ...