A cushion-shaped Fancy Pink diamond ring weighing approximately 12.16cts, VVS2. Photo Christie's Image Ltd 2012

Set with a fancy pink cushion-shaped diamond, weighing approximately 12.16 carats, to the triangular-cut diamond shoulders, mounted in platinum and gold, ring size 6¾. Estimate: SFr.2,900,000-4,800,000 (US$3,100,000-5,000,000)

Accompanied by report no. 1142549052 dated 1 June 2012 from the GIA Gemological Institute of America stating that the diamond is Fancy Pink colour, VVS2 clarity 

Christie's. Geneva Magnificent Jewels. 13 November 2012, Geneva