Tiffany & Co. fancy intense yellow diamond and diamond 'Kaleidoscope Key' pendant necklace, circa 2010, designed as a stylised key, centring an openwork starburst, the centre collet-set with a cushion-shaped natural fancy intense yellow diamond weighing approximately 0.40 carats, further decorated by near colourless brilliant-cut diamonds together weighing approximately 0.65 carats, completed by a trace chain, mounted in 18ct gold and platinum, pendant length 50 mm, inner circumference 500 mm, pendant numbered, signed Tiffany & Co.