Lot 207. A 10.16 carats D colour, Internally Flawless clarity heart-shaped Type IIa diamond ring, by Graff. Estimate CHF 700,000 - CHF 1,100,000 (USD 710,465 - USD 1,116,445). Photo Christie's Images Ltd 2016.

Set with a heart-shaped diamond, weighing approximately 10.16 carats, between tapered baguette-cut diamond shoulders, ring size 4, mounted in platinum, in blue leather Graff case. Signed Graff

Accompanied by report no. 15326657 dated 26 September 2016 from the GIA Gemological Institute of America stating that the diamond is D colour, Internally Flawless clarity; also with a working diagram indicating that the clarity of the diamond is improvable to Flawless, and a Diamond Type Classification letter stating that the diamond has been determined to be Type IIa..

Christie's. Geneva Magnificent Jewels, 15 November 2016, Geneva