Van Cleef & Arpels Rose Gold, Carnelian, Mother-of-Pearl and Diamond 'Bouton D'or' Necklace 18 kt., the V-shaped necklace designed as three stepped rows of rose gold buttons and concave discs alternating with fifty-one carnelian and thirty mother-of-pearl buttons backed by gold, each centering a collet-set round diamond, totaling 185 round diamonds ap. 5.55 cts., signed VCA, no. JE444485, ap. 91.3 dwts. Length 16 3/4 inches. With signed felt pouch. C Estate of an Italian Philanthropic Family