A pigeon-blood red Burmese ruby weighing 25.59 carats sold for a world record $30.3 million U.S. (28.25 million Swiss Francs) at Sotheby's auction on Tuesday (May 12).
David Bennett, Sotheby's International Jewellery Division Chairman, shares with us his comments on the auction and the global gemstone market.
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12 май 2015