18 Karat Gold, Diamond and Emerald Brooch, Cartier - Sotheby's
Designed as a frog, set with numerous round diamonds, some of yellow hue, with two round emerald eyes, signed Cartier. Estimate: 10,000 – 15,000 USD
Sotheby's. Magnificent Jewels. New York | 17 Apr 2013 - www.sothebys.com