A Pair of Emerald and Diamond Ear Pendants. Photo Christie's Image Ltd 2012

Each suspending a detachable pear-shaped emerald, weighing approximately 22.12 and 21.47 carats, to the surmount designed as a circular and baguette-cut diamond scrolling plaque, set with a square-cut emerald, weighing approximately 1.95 and 1.71 carats, mounted in 18k gold and platinum, with French assay marks and maker's marks. Estimtate $600,000 - $800,000 

Surmounts signed Van Cleef & Arpels, no. 4578 C.S. (Commande Spèciale)

With report 12060253 1 and 2 dated 3 July 2012 from Gübelin Gem Lab stating that gemmological testing revealed characteristics consistent with those of emeralds originating from Colombia. Indications of minor clarity enhancement. Tested insofar as mounting permits. 

Christie's. Magnificent Jewels. 16 October 2012. New York, Rockefeller Plaza