A pink sapphire and diamond three-stone ring The cushion-shaped pink sapphire, weighing 2.66 carats, between brilliant-cut diamonds, to a platinum hoop, diamonds approx. 0.50 carat total, London hallmarks, ring size M Accompanied by a report from GCS stating that the pink sapphire is natural, of Burmese origin, with no evidence of heat treatment. Report number 79235-47, dated 25th January 2019.