18 Karat Gold, Turquoise, Tourmaline and Diamond Necklace, Oscar Heyman & Brothers - Sotheby's

Composed of 31 turquoise beads graduating from approximately 22.0 to 15.2 mm, spaced by 30 faceted tourmaline rondelles, completed by a clasp set with round, baguette and square-cut diamonds weighing approximately 4.60 carats, length 23½ inches, stamped OHB, numbered 181106. With signed box. Estimate: 12,000 - 15,000 USD - LOT SOLD. 25,000 USD

Sotheby's. Magnificent Jewels/ New York | 17 Apr 2013  www.sothebys.com