Lot 651. A Rare 10.21 carats Kashmir Sapphire and Diamond Ring, by Mouawad. Estimate HK$ 6,800,000 - 8,800,000 (€830,000 - 1,100,000). Photo: Bonhams.

The antique cushion-shaped sapphire, weighing 10.21 carats, within a pear-shaped diamond surround, diamonds approximately 3.90 carats total, signed Mouawad, maker's mark, ring size 5 with ring guard 

Accompanied by a SSEF report stating that the natural sapphire has no indications of heat treatment and originates from Kashmir. Report number 85262, dated 23 March 2016. 

Accompanied by a Gubelin report stating that the natural sapphire has no indications of heat treatment and originates from Kashmir. Report number 16020159, dated 1 March 2016.  

Accompanied by an AGL (American Gemological Laboratories) report stating that the natural sapphire has no indications of thermal treatment and originates from Kashmir. Report number CS 1072675, dated 11 January 2016. 

Bonhams. RARE JEWELS & JADEITE, 30 Nov 2016, 15:00 HKT - HONG KONG, ADMIRALTY