Aquamarine, onyx and diamond brooch/pendant - Sotheby's

Of geometric design, the centre set with a step-cut aquamarine, circular- and single-cut diamonds, and long polished onyx baguettes, suspended from a fine link chain, length approximately 510mm, detachable brooch fitting, fitted case. Estimate: 8,000 - 12,000 CHF - Unsold

Sotheby's Magnificent Jewels Geneva | 14 Nov 2012 www.sothebys.com