An oval-cut diamond ring. Photo Christie's Image Ltd 2014

Set with an oval-cut diamond, weighing approximately 5.13 carats, flanked on either side by a tapered baguette-cut diamond, mounted in platinum. Estimate $120,000 – $180,000

With report 2155897129 dated 28 January 2014 from the Gemological Institute of America stating that the diamond is E color, VVS2 clarity 

Christie's. IMPORTANT JEWELS, 10 June 2014, New York, Rockefeller Plaza - http://www.christies.com/