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Blue diamond ring breaks world record

Valentina Ruiz Leotaud | April 22, 2018 | 1:45 pm Precious Metals Diamond Gold 

A cut-cornered rectangular step-cut fancy intense blue diamond weighing 3.47 carats set a price-per-carat world record for a blue diamond after it sold for $1.9 million per carat to reach almost $6.7 million at Sotheby’s Magnificent Jewels Auction. The gem’s...

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