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

Set with a modified cut-cornered rectangular-cut fancy intense greenish blue diamond, weighing approximately 5.02 carats, flanked on either side by a trapeze-cut diamond, mounted in platinum. Estimate $1,000,000 – $1,500,000

With report 1152900307 dated 10 February 2014 from the Gemological Institute of America stating that the diamond is fancy intense greenish blue, natural color, SI2 clarity

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