The oval-cut sapphire, weighing 8.07 carats, within an undulating rose-cut diamond surround, diamonds approximately 1.70 carats total, ring size 6¼

Laboratories) report stating that the natural sapphire has no indications of heat treatment and originates from Madagascar. Report number 8086174, dated 13 March 2017.

Accompanied by a GRS report stating that the natural sapphire is vivid blue colour (GRS type 'royal blue'), has no indications of heat treatment and originates from Madagascar. Report number GRS2016-120987, dated 14 December 2016.

Bonhams. RARE JEWELS & JADEITE, 31 May 2017, 15:00 HKT, HONG KONG, ADMIRALTY