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18 Karat White Gold, Tanzanite, Sapphire and Diamond Brooch, Sifen Chang. Estimate 20,00030,000 USD. Photo Sotheby’s.

Designed as a flower, the petals set with five tumbled tanzanites weighing 99.56 carats, the pistils and petals set with round diamonds weighing 2.34 carats, accented by round sapphires weighing 2.44 carats, with Chinese characters for Sifen Chang. With signed box.

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