Vintage Tiffany & Co. Diamond Band Platinum Size 5.5 (51)This classic Tiffany & Co. band ring is made of platinum and set with a row of round brilliant cut diamonds. The diamonds are set close together in a shared prong setting, creating a continuous surface with minimal metal showing between the stones. The band is slim, with a clean, modern profile that sits low on the finger a classic eternity style. The inside of the band is engraved with the Tiffany & Co. signature and platinum purity mark (PT950). The