A 5.30 carat fancy deep-blue diamond set within a mount pave-set with brilliant-cut diamonds and courses of baguette-cut diamonds that was sold at Bonhams auction house in London on April 24, 2013. An extremely rare blue diamond sold for 6.2 million GBP 9.5 million USD, 7.3 million euros at a London auction on April 24, setting a new world record for price per carat. The fancy deep-blue diamond weighing 5.30 carats sold at Bonhams Fine Jewellery sale in central London for a record 1.8 million USD per carat, beating the previous record of 1.68 million USD. AFP PHOTO / BONHAMS
via A fancy deep-blue diamond sets a world record at Bonhams Fine Jewellery sale in London.
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