An exceptional 18ct white gold, sapphire and diamond ring, centring a claw-set oval Ceylon sapphire weighing 37.06 carats, framed by a geometric surround decorated with brilliant-cut diamonds, the diamonds together weighing approximately 0.51 carat, size O1/2, accompanied by a GSL report numbered AA64630, dated 29 January 2021, stating that the 37.06 carat sapphire is natural, with no indications of heating, of Ceylon origin.