Victorian Antique Silver Operculum Shell PinLovely antique silver and operculum shell pin. Operculum shell jewellery was particularly popular in the Victorian and Edwardian era. Made from the calcified "trapdoor" of marine snails this jewellery was worn as protective amulets and to ward off evil spirits. Often seen in necklaces, brooches and cufflinks. Stick pins were used from 1830s to the 1920s for fixing and holding a gentlemans cravat in place. By the 1890's stick pins were also emerging in