A cushion-shaped sapphire and diamond ring

The cushion-shaped sapphire, weighing 8.13 carats, between fancy-cut diamond shoulders, mounted in platinum, diamonds approximately 1.60 carats total, ring size 5¾..Estimate: HK$1,200,000 - 1,800,000, $150,000 - 230,000. Unsold

Accompanied by a certificate from the AGTA Gemological Testing Centre, stating that the sapphire is natural, of Kashmir origin and has no indication of heating. Report number 92005210, dated 9th February 2007. Accompanied by a certificate from the SSEF Swiss Gemmological Institute, stating the sapphire is of Kashmir origin and has no indications of heating. Report number 45063, dated 3rd August 2005.

Bonhams. Fine Jewellery and Jadeite and Modern Wristwatches, 21 May 2009. Island Shangri-La Hong Kong Hotel, Admiralty, Hong Kong www.bonhams.com