Platinum, Burmese Sapphire and Diamond Necklace, Harry Winston. Estimate 300,000 — 400,000 USD (272,655 - 363,541 EUR). Photo courtesy Sotheby's

The necklace designed as a rivière, set with 73 round diamonds weighing approximately 42.00 carats, length 15¼ inches, with maker's mark; circa 1978; suspending a detachable pendant centering a pear-shaped sapphire weighing 16.95 carats, framed by round and pear-shaped diamonds weighing approximately 5.95 carats; circa 1979. With signed box.

Accompanied by GIA report no. 2135275937 stating that the sapphire is of Burmese origin, with no indications of heating.

Accompanied by AGL report no. CS 66547 stating that the sapphire is natural corundum, with no indications of heating.

Accompanied by SSEF report no. 79277 stating that the sapphire is of Burmese origin, with no indications of heating.

Sotheby's. Magnificent Jewels New York, 21 avr. 2015, 10:00 AM