Emerald and diamond ring, Tiffany & Co

The emerald-cut emerald weighing 5.27 carats, framed by 16 round diamonds weighing approximately 1.10 carats, mounted in 18 karat gold, size 5¾, signed Tiffany & Co. Estimate 10,000—15,000 USD

NOTE: Accompanied by AGTA report no. 97005111 stating that the emerald is of Zambian origin; minor clarity enhancement.

Sotheby's. Important Jewels. 04 Feb 09. New York www.sothebys.com photo courtesy Sotheby's