A sapphire and diamond ring. Photo Christie's Image Ltd 2014.
Set with a cushion-shaped sapphire, weighing approximately 35.74 carats, to the old-mine brilliant-cut diamond shoulders, weighing approximately 2.36 and 2.31 carats, and plain hoop, mounted in platinum, ring size 5¾. Estimate CHF400,000 – CHF580,000 ($454,976 - $659,716)
Accompanied by report no. 13100043 dated 9 October 2013 from the Gübelin GemLab stating that the sapphire is of Ceylon origin, with no indications of heating, and an Information Sheet on Unheated sapphires
Report no. 73473 dated 17 March 2014 from the SSEF Swiss Gemmological Institute stating that the sapphire is of Ceylon origin, with no indications of heating
Report no. 6147779494 dated 30 July 2012 from the GIA Gemological Institute of America stating that the 2.36 carat diamond is F colour, VS2 clarity
Report no. 2155699435 dated 10 October 2013 from the GIA Gemological Institute of America stating that the 2.31 carat diamond is E colour, VS2 clarity
Christie's. GENEVA MAGNIFICENT JEWELS. 14 May 2014. Geneva -www.christies.com