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Platinum, Sapphire and Diamond Necklace. Photo Sotheby's

Set with 33 oval sapphires weighing approximately 106.35 carats, spaced by emerald-cut diamonds weighing approximately 24.25 carats, length 15¾ inches. Estimation: 180,000 - 220,000 USD 

Sotheby's. Important Jewels. New York | 20 sept. 2012 www.sothebys.com