TIFFANY & CO., AN ANTIQUE BURMA NO HEAT RUBY, COLOMBIAN EMERALD AND NATURAL PEARL NEGLIGEE NECKLACE, EARLY 20TH CENTURY in platinum, the fancy link chain set with French and old cut diamonds, white and golden natural pearls, cabochon rubies and cabochon emeralds, suspending two rows of French, marquise and single cut diamonds terminating in a pearl and polished emerald drop, French assay mark, signed Tiffany & Co., 47.5cm, 11.4g. Accompanied by a gemmological report stating the pearls are of natural saltwater origin, the emeralds are of Colombian origin with moderate clarity enhancement and the rubies of Burmese origin with no indication of heat treatment.