A pair of fine emerald and diamond ear pendants. Photo: Christie's Images Ltd 2013

Each suspending a pear-shaped emerald, weighing approximately 19.83 and 18.91 carats, joined by a marquise-cut diamond, to the rectangular-cut emerald surmount, weighing approximately 1.02 and 0.99 carat, from an old European-cut diamond French wire, mounted in pink and white gold. Estimate:  $220,000 – $320,000

With reports 13037148 and 13037147 dated 10 March 2013 from Gübelin Gem Lab stating that gemmological testing of the pear-shaped emeralds, weighing approximately 19.83 and 18.91 carats, revealed characteristics consistent with those of emeralds originating from Colombia. Indications of minor clarity enhancement

With reports CS 53753 and CS 53754 dated 28 February 2013 from the American Gemological Laboratories stating that it is the opinion of the Laboratory that the origin of the pear-shaped emeralds, weighing approximately 19.83 and 18.91 carats, would be classified as Colombia. Clarity Enhancement: Faint

With report CS 53921 A and B dated 13 March 2013 from the American Gemological Laboratories stating that it is the opinion of the Laboratory that the origin of the rectangular-cut emeralds, weighing approximately 1.02 and 0.99 carat, would be classified as Colombia. Clarity Enhancement: Insignificant to Minor

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