18ct white gold, black sapphire and diamond 'Metropolis' ring, Canturi, centring a cushion-shaped sapphire stated to weigh 4.28 carats, claw-set within a border pave-set with brilliant-cut diamonds, between open work shoulders centring baguette-cut sapphires flanked by diamonds, the small diamonds and small sapphires together stated to weigh 0.57 carat and 0.13 carat respectively, size K12/51, signed Canturi. Accompanied by a Canturi box and invoice numbered 3102913, dated 4 February 2011, and a Canturi valuation numbered MV3705712, dated 24 January 2011.