18 karat gold, platinum and diamond pendant-necklace, David Webb. Photo Sotheby's 

The ropetwist chain suspending a pendant of cruciform design, accented by numerous round diamonds weighing approximately 11.50 carats, gross weight approximately 115 dwts, length 17½ inches, the necklace and pendant signed Webb; the pendant detaches for wear as a brooch; fitted with retractable pendant-loop. Estimation 25,000 — 35,000 USD 

Sotheby's. Important Jewels. New York | 06 févr. 2014 - www.sothebys.com