Cultured pearl, colored stone and diamond necklace, Verdura

The double-strand composed of 78 cultured pearls measuring approximately 9.8 to 8.9 mm., completed by an oval-shaped clasp set with a cabochon sapphire, framed by segments of fluted coral and set with 7 square-shaped diamonds, mounted in 18 karat gold, length 16 inches, signed Verdura. Est. 5,000—7,000 USD. Lot sold 11,875 USD 

Sotheby's. Magnificent Jewels. 23 Apr 09. New York www.sothebys.com Photo courtesy Sotheby's