Lot 194. A 9.19 carats Kashmir cushion-cut sapphire and diamond ring. Estimate CHF425,000 – CHF625,000 ($438,690 - $645,132). Photo Christie's Image Ltd 2016.

Set with a cushion-cut sapphire, weighing approximately 9.19 carats, to the baguette diamond-set shoulders, ring size 5 ¼, mounted in platinum

Accompanied by report no. 16010145 dated 2 February 2016 from the Gübelin GemLab stating that the origin of the sapphire is Kashmir, with no indications of heating, an Information Sheet on 'Unheated sapphires' and an Appendix indicating that 'This natural sapphire (...) possesses a richly saturated and homogeneous colour and a finely proportioned cut.' 

Report no. 83604 dated 18 January 2016 from the SSEF Swiss Gemmological Institute stating that the origin of the sapphire is Kashmir, with no indications of heating.

Christie's. GENEVA MAGNIFICENT JEWELS, 18 May 2016, Geneva