19 juin 2017
Ceylon sapphire, emerald and diamond clip brooch, by René Boivin, ca. 1960
Lot 2087. Ceylon sapphire, emerald and diamond clip brooch, by René Boivin, ca. 1960. Estimate CHF 60 000 / 80 000 (€ 55 560 / 74 070). © Koller Auctions Yellow gold 750. Designed as a dolphin, with 1 emerald cabochon of ca. 5 mm as eye, set with round...