A pair of emerald and diamond ear pendants. Photo Christie's Image Ltd 2014.

Each marquise and pear-shaped diamond cluster top, weighing a total of approximately 14.38 carats, suspending a detachable cushion-shaped emerald pendant, weighing approximately 12.24 and 10.41 carats, mounted in platinum, 4.2 cm. The tops signed HW for Harry Winston. Estimate CHF540,000 – CHF720,000 ($614,218 - $818,957)

Accompanied by report no. CS48875A and B dated 27 February 2014 from the AGL American Gemological Laboratories stating that both emeralds are of Colombian origin, with indications of faint amount of oil

Reports no. 72792 and 72791 dated 20 February 2014 from the SSEF Swiss Gemmological Institute stating that both emeralds are of Colombian origin, with indications of minor amount of oil

10 reports dated January 2014 from the GIA Gemological Institute of America stating that the 10 diamonds, ranging from 2.14 to 0.90 carats, are D or E colour, Internally Flawless to VS2 clarity

Christie's. GENEVA MAGNIFICENT JEWELS. 14 May 2014. Geneva -www.christies.com