Lot 1710. 9.05 carats Kashmir Sapphire and Diamond Ring. Estimate HK$4,500,000 — 6,000,000 / US$573,300 - 764,400. Lot Sold 4,000,000 HKD (510,240 USD). Courtesy Sotheby's.

Set with a cushion-shaped sapphire weighing 9.05 carats, to the surround embellished with baguette, marquise- and pear-shaped diamonds, mounted in 18 karat white gold, size 6¼.

Accompanied by SSEF report no. 98648, dated 7 March 2018, stating that the sapphire is of Kashmir origin, with no indications of heating; further accompanied by SSEF appendix letter and Premium Report, stating 'The natural sapphire ...possesses extraordinary characteristics and merits special mention and appreciation. The described sapphire exhibits a remarkable size and weight of 9.05ct, combined with an attractive blue colour and a very fine purity. A natural sapphire from Kashmir of this size and purity can be considered rare and exceptional.'  Also accompanied by AGL report no. 1080706, dated 12 January 2017, stating that the sapphire is of Kashmir origin, with no gemmological evidence of heat and no clarity enhancement.