A cushion-cut emerald and diamond ring. Photo Christie's Image Ltd 2014.

Set with a cushion-cut emerald, weighing approximately 14.35 carats, flanked on either side by a trapeze-cut diamond, mounted in platinum and 18k gold. Estimate $180,000 – $250,000

With report CS 59442 dated 28 February 2014 from the American Gemological Laboratories stating that it is the opinion of the Laboratory that the origin of this material would be classified as Colombia. Standard Enhancement: Minor clarity, modern type 

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