18ct white gold, sapphire and diamond ring, of cluster design, centring a claw-set cushion-shaped mixed-cut sapphire weighing 5.05 carats framed by an open work double border of similarly set brilliant-cut diamonds to partially diamond-set shoulders, the diamonds together weighing approximately 1.12 carats, size O 1/2. Accompanied by a gem Research SwissLab gemstone report numbered GRS2020-030409, dated 3 March 2020, stating that the 5.05 carat natural sapphire is vivid to deep blue (Grs-type 'Royal blue') colour, of Burma (Myanmar) origin and with no indication of thermal treatment.