18 Karat Two-Color Gold, Fire Opal, Diamond and Ruby 'Griffin' Brooch, Buccellati. Estimate 30,000 — 50,000 USD. Photo: Sotheby's.

Designed as a fantastical griffin, the torso set with a Mexican fire opal weighing 42.95 carats, accented by round diamonds weighing 18.25 carats, completed by marquise-shaped ruby eyes weighing .15 carat, gross weight approximately 61 dwts, signed Buccellati; fitted with pendant loop.

This one-of-a-kind brooch was designed in 1976 by Gianmaria Buccellati. The design was created around the shape, color and form of the Mexican fire opal. For a sketch and illustration of this design see Buccellati: Art in Gold, Silver and Gems edited by Maria Cristina Buccellati, pages 116-117.

Sotheby's. Important Jewels, New York, 24 sept. 2015