A platinum diamond single stone ring, by Tiffany & Co., with a round brilliant cut diamond, stated weight 0.80ct, in a six claw setting, to a platinum knife edge mount, the inner band signed Tiffany & Co., no. 63476404. With original box, outer box, pouch, bag, sales receipt and the Tiffany & Co diamond report stating: Diamond colour - G Diamond clarity - Vs1 Weight - 4.4g Ring size J. Buying this diamond ring at auction could save up to 0.42 tonnes of CO2e compared to buying new.