Platinum and diamond pendant necklace, Tiffany & Co., designed as a fine trace link chain spectacle-set at intervals with brilliant-cut diamonds, suspending to the centre a pair of concentric open work square-shaped plaques pave-set with round brilliant-cut diamonds further suspending a collet-set pear-shaped diamond from brilliant-cut diamond connectors terminating in seven collet-set pear-shaped diamond swing drops from brilliant-cut diamond surmounts, the diamonds together weighing approximately 3.35 carats, inner circumference approximately 400 mm, signed Tiffany & Co.