Piranesi spectacular sapphire and diamond necklace, Italy, the articulated collar composed of a line of claw-set brilliant-cut diamonds supporting a fringe of graduated flowerheads each centring a claw-set oval sapphire framed by diamonds between diamond-set spacers, the 19 sapphires and diamonds together weighing approximately 49.85 carats and 28.66 carats respectively, stamped 18ct gold, inner circumference 380 mm, signed Piranesi, made in Italy., accompanied by a Piranesi box.