Platinum, 18 karat gold, pink sapphire and diamond ring. Photo: Sotheby's.

Centered by a cushion-cut pink sapphire weighing approximately 6.10 carats, flanked by two half-moon-shaped diamonds weighing approximately 1.95 carats,size 5¾. Estimation 20,000 — 25,000 USD 

Sotheby's. Important Jewels. New York | 24 sept. 2013 - http://www.sothebys.com