18 karat gold, gem-set and diamond brooch, René Boivin, France. Photo Sotheby's

Designed as a dolphin set with round sapphires and emeralds, with a cabochon emerald eye, suspending an oval-shaped sapphire weighing approximately 13.00 carats, further decorated with round and pear-shaped diamonds weighing approximately .60 carat, signed René Boivin, with French assay and maker's marks; circa 1960. Estimate 40,000 — 60,000 USD

Sotheby's. Important Jewels. New York | 06 Feb 2014 - www.sothebys.com