Brand: Tiffany & Co Rank A Around size #17.5 Pt Platinum Comment Tiffany & Co.& Co (Material) Pt950 (Size) #17.5 (Ring Width) 3.0 mm (0.12 in) (Total Weight) 6.1 g Introducing Tiffany & Co. Together Milgrain Band Ring. Ring The edge of the band has a milgrain design with milgrain finish. The antique-like milgrain design is cute. The simple design makes it a stylish band ring that can be worn layered. This is a large item. So don't miss it.*The exact size is between Size #17.5 and #18. Ring size listed will usually be international sizing. Not US. Unless otherwise stated. You accept this description upon purchase. Please use the Ring Size Chart.