A coral, onyx and diamond bracelet. Photo: Christie's Images Ltd 2013

Designed as a series of old European-cut diamond and onyx square-shaped links, alternating with calibré-cut cabochon coral and onyx spacers with old European-cut diamond detail, mounted in platinum, 6 7/8 ins. Estimate:  $8,000 – $12,000 

Christie's. MAGNIFICENT JEWELS. 15 October 2013. New York, Rockefeller Plaza.