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Rare blue diamond Bulgari ring fetches £1.9m after appearing at auction for the first time | Daily Mail Online
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A Bonhams employee poses with the Bulgari crossover ring set with 3.72 carat fancy vivid blue diamond and 3.93 carat diamond at Bonhams auction house in London September 21, 2011. The piece,
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GIA on Twitter: "#FunFact: Only one in 10,000 carats of diamonds displays a fancy color, making them among the most rare and costly of all gems. The “BVLGARI Blue” ring featuring a
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