18 Karat White Gold, Green Opal and Diamond Ring and Earrings, Sifen Chang - Sotheby's

The ring centered by a cabochon green opal weighing 33.36 carats, within foliate surrounds set with round diamonds weighing 1.05 carats, size 6, with Chinese characters for Sifen Chang; the earrings of similar design set with two cabochon green opals weighing 8.30 carats and 8.04 carats, accented by round diamonds weighing 1.85 carats, with Chinese characters for Sifen Chang. With two signed boxes. Estimation: 30,000 - 40,000 USD

Accompanied by three Gübelin reports:
No. 12011020 stating that the 33.36 carat opal is Natural, with no indications of color enhancement.
No. 12011018 stating that the 8.30 carat opal is Natural, with no indications of color enhancement.
No. 12011019 stating that the 8.04 carat opal is Natural, with no indications of color enhancement

Sotheby's. Magnificent Jewels. New York | 17 avr. 2013 www.sothebys.com