A colored diamond ring. Photo: Christie's Images Ltd 2012

Set with a cut-cornered modified square-cut fancy yellow diamond, weighing approximately 26.18 carats, flanked on either side by four baguette-cut diamonds, mounted in gold and platinum. Estimate $450,000 - $650,000. Price Realized $602,500

With report 1142960186 dated 22 August 2012 from the Gemological Institute of America stating that the diamond is fancy yellow, natural color, internally flawless clarity

Christie's. Magnificent Jewels . 10 December 2012 New York, Rockefeller Plaza