Lot 495. A Superb 8.67 carats Fancy Intense Blue VVS1 clarity Potentially Internally Flawless Type IIb Diamond Ring. Estimate CHF 7,500,000 - CHF 10,500,000 (USD 7,528,714 - USD 10,540,199). Price realised CHF 13,137,500. © Christie's Images Ltd 2017

Set with a fancy intense blue rectangular step-cut diamond, weighing approximately 8.67 carats, to the plain hoop, ring size 6 ½, mounted in gold.

Accompanied by report no. 2185469086 dated 6 June 2017 from the GIA Gemological Institute of America stating that the diamond is Fancy Intense Blue colour, VVS1 clarity; also with a working diagram indicating that the clarity of the diamond is potentially Internally Flawless, and a Diamond Type Classification letter stating that the diamond has been determined to be Type IIb.

Christie's. Magnificent Jewels, 14 November 2017, Geneva