Lot 267. A 14.88 carats Kashmir sapphire and diamond ring. Estimate CHF 1,000,000 - CHF 1,500,000 (USD 1,007,806 - USD 1,511,710). © Christie's Images Ltd 2017

Set with a cushion-shaped sapphire, weighing approximately 14.88 carats, between trapeze-cut diamond shoulders, ring size 5 ¼, mounted in platinum 

Accompanied by report no. 90710 dated 7 March 2017 from the SSEF Swiss Gemmological Institute stating that the origin of the sapphire is Kashmir, with no indications of heating, and an Appendix letter stating that this sapphire is 'characterised by an attractive blue colour and an excellent purity, a combination rarely encountered in sapphires from Kashmir of this size'. 

Report no. 1081357 dated 27 January 2017 from the AGL American Gemological Laboratories stating that the origin of the sapphire is Kashmir, with no gemological evidence of heat and no clarity enhancement.

Christie's. Magnificent Jewels, 17 May 2017, Geneva