A yellow colored diamond and diamond ring. Photo Christie's Image Ltd 2014

Set with a cushion-cut fancy yellow diamond, weighing approximately 23.90 carats, flanked on either side by a trapeze-cut diamond, mounted in platinum and 18k gold. Estimate $375,000 – $450,000

With report 5141912747 dated 6 August 2012 from the Gemological Institute of America stating that the diamond is fancy yellow, natural color, VVS2 clarity

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