RENÉ BOIVIN - 1970S LEOPARD HEAD PENDANT The head is in blackened silver and 18K yellow gold, the eyes set with an oval green tourmaline. Signed René Boivin and stamped by the Cristofol workshop. Gross weight: 54.99 g. Size: approx. 5 x 5 cm. Based on a design by Marie-Caroline de Brosses. A green tourmaline, silver and 18K yellow gold leopard's head pendant by René Boivin, circa 1970. Signed René Boivin and Cristofol maker's mark. Gross weight : 54,99 gr. Dimensions : 5 x 5 cm approx. After a drawing by Marine-Caroline de Brosses.