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Platinum, Ceylon color-Change Sapphire and Diamond PinEstimate 75,000100,000 USD. Photo Sotheby’s.

Centering a cushion-cut color-change sapphire measuring approximately 21.7 by 19.7 by 12.6 mm, framed by round and baguette diamonds weighing approximately 4.45 carats.

Accompanied by AGL report no. CS 65470 stating that the color-change sapphire is of Ceylon origin, with no indications of heating.

Formerly from the private collection of Marguerite Dupont Boden

Sotheby’s. Important Jewels. New York – 05 Feb 2015, 10:00 AM