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

Each set with a modified pear-shaped emerald, weighing approximately 13.26 and 12.92 carats, within a pear-shaped and marquise-cut diamond surround, mounted in platinum and gold, with pendant hooks for suspension. Estimate $100,000 – $150,000

With report CS 59707 dated 5 March 2014 from the American Gemological Laboratories stating that it is the opinion of the Laboratory that the origin of the emerald, weighing approximately 13.26 carats, would be classifed as Colombia. Minor clarity enhancement, modern type

With report CS 59708 dated 5 March 2014 from the American Gemological Laboratories stating that it is the opinion of the Laboratory that the origin of the emerald, weighing approximately 12.92 carats, would be classifed as Colombia. Minor clarity enhancement, traditional type 

Christie's. MAGNIFICENT JEWELS, 16 April 2014, New York, Rockefeller Plaza -www.christies.com