An emerald and diamond tiara-necklace, monture Cartier. Photo Christie's Image Ltd 2012

Designed as a graduating series of openwork diamond palm motifs, each centred by a single-stone diamond accent, to the principal emerald cabochon and diamond cluster highlight, raised on a metal frame, 1953, French marks for platinum and gold, with a detachable snakelink back chain for wearing as a necklace, as a necklace 36.5cm long, fitted maker’s case. Signed Monture Cartier. Estimate: $190,560 – $238,200. Unsold.

The property of a noble Greek family

Christie's. IMPORTANT JEWELS. 12 December 2012. London, King Street - www.christies.com