Lot 51. A Type IIA pear-shaped diamond ring weighing approximately 19.24 carats, by Harry Winston. Estimate CHF1,200,000 – CHF1,600,000 ($1,365,041 - $1,820,054). Price realised CHF 1,685,000. © Christie's Image Ltd 2014

Set with a pear-shaped diamond, weighing approximately 19.24 carats, to the tapered baguette-cut diamond shoulders, mounted in platinum, ring size 5½. Signed Winston for Harry Winston. 

Accompanied by report no. 5151923755 dated 12 February 2014 from the GIA Gemological Institute of America stating that the diamond is F colour, Internally Flawless clarity, and a Diamond Type Classification letter stating that the diamond is Type IIA

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