A pair of Art Deco emerald and diamond ear pendants. Photo Christie's Image Ltd 2013

The diamond-set circular-shaped openwork tops each suspending a rectangular-cut diamond cluster and a diamond-set pendant with a drop-shaped emerald centre, mounted in platinum and gold, 1930s, adapted. The tops signed Cartier, the pendants signed VCA for Van Cleef & Arpels, no. 46641. Estimate:  $40,997 – $62,575

Christie's. MAGNIFICENT JEWELS. 15 May 2013. Geneva. www.christies.com