A pair of ruby and diamond ear pendants. Photo Christie's Image Ltd 2013

Each set with an oval-cut ruby, weighing approximately 5.05 and 4.20 carats, within a circular-cut diamond surround, from an old mine-cut diamond, weighing approximately 2.02 and 2.01 carats, to the circular-cut diamond French wire, mounted in platinum. Estimate $350,000 – $550,000

With reports 12030261 and 12030260 dated 4 April 2012 from Gübelin Gem Lab stating that gemmological testing revealed characteristics consistent with those of rubies originating from Burma (Myanmar). No indications of heating

With report GRS2012-063943 dated 27 June 2012 from GRS GemResearch SwissLab stating that gemmological testing revealed characteristics corresponding to those of two natural rubies from Burma (Myanmar). No indication of thermal treatment. Accuracy as testing in mounting permits

With reports 5131133709 and 5131164367 dated 7 and 8 March 2011 from the Gemological Institute of America stating that the diamonds weighing approximately 2.02 and 2.01 carats are G color, VVS2 and VS1 clarity respectively

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