PLATINUM DECO MIKIMOTO PEARL NECKLACE: A 16'' strand necklace of 4.50-5.00 mm Mikimoto cultured pearls. Grade ''A '' quality with sterling silver clasp. Signed: Mikimoto. Pendant is a platinum Art Deco clasp with 30 round full cut diamonds, totaling approx. 1.00 Ct. Rated VS-SI in clarity t and H-I in color. Two sapphires, one carved emerald, one ruby and one cultured pearl. Total gemstone weight: 2.50 Ct. Approx. The diamonds are bead set The gemstones are prong and bezel set. Purchased from Christie's Auction of the Doris Duke Collection. Weight: 7.5 grams.