Lot 306. An important 26.24 carats Type IIa oval-shaped diamond ring, by Graff. Estimate CHF2,250,000 – CHF3,250,000. Price realised CHF 4,323,750. Photo Christie's Image Ltd 2013

Set with an oval-shaped diamond, weighing approximately 26.24 carats, to the pear-shaped diamond shoulders, weighing approximately 1.06 and 1.04 carats, mounted in platinum, ring size adjustable 5¼ to 6¾. 

Accompanied by report no. 2155259755 dated 13 February 2013 from the GIA Gemological Institute of America stating that the diamond is D colour, VVS1 clarity, a working diagram indicating that the clarity of the diamond might be potentially Internally Flawless, and a Diamond Type Classification letter stating that the diamond is Type IIa

Provenance: Aquired from Graff by the present owner in 2000.

Christie's. MAGNIFICENT JEWELS. 15 May 2013. Geneva