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Lot 1682. Rare 12.67 carats Brazilian Paraíba Tourmaline and Diamond Ring. Estimate 8,750,000 — 11,000,000 HKD. Photo: Sotheby's.

Set with a cushion-shaped Paraíba tourmaline weighing 12.67 carats, flanked to each side by a pear-shaped and circular-cut diamond butterfly motif embellished with a pear-shaped Paraíba tourmaline, the diamonds weighing approximately 2.00 carats in total, mounted in platinumRing size: 6½.

Accompanied by AGL report numbered 1084968, dated 19 June 2017, stating that the Paraíba tourmaline is natural, of Classic™ Brazilian origin, with no clarity enhancement; also accompanied by Gübelin report stating that the Paraíba tourmaline is natural, of Brazilian origin. Further accompanied by a Jewel Folio by AGL, and a gemmological report from GIA. 

Sotheby's. Magnificent Jewels and Jadeite, Hong Kong, 03 oct. 2017, 01:30 PM