Platinum, tourmaline and diamond long chain necklace, Tiffany & Co., the long chain is designed as a series of collet-set brilliant-cut diamonds alternating between similarly set circular-cut and oval-shaped tourmalines of pink and brown tint, the tourmalines and diamonds together weighing approximately 166.00 carats and 8.50 carats respectively, circumference approximately 1800 mm, signed Tiffany & Co.