An emerald, diamond, sapphire and ruby brooch. Photo Christie's Image Ltd 2013

Set with a hexagonal-shaped cabochon emerald carved with a foliate motif, within a circular-cut diamond sculpted surround, enhanced by cabochon emerald, sapphire and ruby detail, mounted in 18k gold, with pendant hoop for suspension. Estimate $80,000 – $120,000

With report 13025188 dated 21 February 2013 from Gübelin Gem Lab stating that gemmological testing revealed characteristics consistent with those of emeralds originating from Colombia. Indications of minor clarity enhancement 

Christie's. NEW YORK MAGNIFICENT JEWELS AND THE PRINCIE DIAMOND. 16 April 2013. New York, Rockefeller Plaza.