TIFFANY & CO., NATURAL PEARL AND DIAMOND NECKLACE Containing 79 natural pearls measuring approximately 2.40-6.24 mm in diameter, strung knotted in a graduated style with a platinum-topped yellow gold clasp containing one old European cut diamond weighing approximately 0.30 carat. Clasp stamp: TIFFANY & CO. 7.70 dwt. GIA, 2020, Report number 2201992452, Natural Pearl, Saltwater, Pinctada, Near-round and oval shape, Cream color, Orient and no overtone