Platinum, 18ct gold, diamond and sapphire ring, Tiffany & Co. Of cluster design, centring a claw-set oval Burmese sapphire weighing 3.40 carats, framed by a line of 28 brilliant-cut diamonds, the diamonds together weighing approximately 2.00 carats, size M1/2, signed Tiffany & Co. Accompanied by a GIA report numbered 6137822105, dated 24 August 2017, stating that the 3.40 carat sapphire is natural, with no indications of heating, of Burmese (Myanmar) origin.