and Sapphire Ring. Tiffany & Co. platinum cocktail ring with central prong-set faceted aquamarine flanked by (10) full cut round diamonds and a second tier of (4) faceted sapphires. Accompanied by a September 17th, 2021 GIA Gem Identification Report no. 2223017656 stating this is one, "Octagonal, Step Cut, Transparent, Greenish Blue, Natural Beryl, Aquamarine, Center stone set in a white metal ring with four (4) blue square step cuts and ten (10) near-colorless round brilliants., 16.99 grams (gross), 20.72 x 16.57 x 10.31 mm". Sapphires measure approx. 1.5mm x 1.5mm. Stamped to interior of band, "Irid Plat. Tiffany & Co.". Total approx. weight is 10.9 dwt (gross). Ring size - 8 1/2. From a 73rd St, Manhattan estate.