18 karat gold, platinum and diamond necklace, David Webb

Designed as rectangular stippled gold links joined by platinum bar links pavé-set with 198 round diamonds weighing approximately 22.50 carats, length 18¼ inches, signed Webb. Est. 30,000—50,000 USD. Lot sold 80,500 USD

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