Lot 50. A rectangular-cut diamond ring weighing approximately 28.13 carats, by Harry Winston. Estimate 720,000 - CHF 1,100,000. Price realised CHF 1,355,000. © Christie's Image Ltd 2014

Set with a rectangular-cut diamond, weighing approximately 28.13 carats, to the tapered baguette-cut diamond shoulders, mounted in platinum, ring size 5¾ with ring sizer. Signed Winston (partially illegible) for Harry Winston.

Accompanied by report no. 2155858670 dated 9 January 2014 from the GIA Gemological Institute of America stating that the diamond is I colour, VS2 clarity 

Christie's. GENEVA MAGNIFICENT JEWELS. 14 May 2014. Geneva