De Beers reduces rough prices at May sight, undisclosed treated diamonds submitted to GIA, and Sotheby’s and Christie’s sales break auction records − again.
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Auction price records were broken in late 2014 as ultra-wealthy buyers vied for rare, important gemstones.
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On Oct. 7 in Hong Kong, a 118.28 ct D-Flawless sold for more than $30 million, becoming the most expensive colourless diamond ever sold at auction.
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