18ct white gold, topaz and diamond 'Parentesi' ring, Bulgari, claw-set to the top with a circular rose-cut blue topaz flanked by brilliant-cut diamond shoulders, the diamonds together stated to weigh 0.32 carat, size 55(O), signed Bulgari, numbered FAHW4X, stamped made in Italy, Italian maker's marks. Accompanied by a Bulgari certificate of authentication numbered 13092265, dated 29 August 2017 and a facsimile Bulgari invoice numbered 0322-3-48155, dated 29 August 2017.