Sapphire and diamond cluster ring

Centering a cushion-shaped sapphire weighing approximately 10.00 carats, framed by 24 round, 10 tapered baguette and 4 marquise-shaped diamonds weighing a total of approximately 3.00 carats, mounted in platinum and white gold, size 6¼. Estimate 7,000—9,000 USD

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