A diamond ring.  Photo Christie's Image Ltd 2013

Set with a brilliant-cut diamond, weighing approximately 10.50 carats, to the platinum hoop, ring size 6¼. Estimate CHF1,200,000 – CHF1,500,000

Accompanied by report no. 8812308 dated 8 February 2013 from the GIA Gemological Institute of America stating that the diamond is D colour, VVS1 clarity, with Excellent Polish and Excellent Symmetry, a working diagram indicating that the clarity of the diamond might be potentially Internally Flawless, and a Diamond Type Classification letter stating that the diamond is Type IIa

Christie's. MAGNIFICENT JEWELS. 15 May 2013. Geneva