This is a new, unused plain ring made of 925 sterling silver. The simple, unadorned design makes it perfect for layering with your existing jewelry. The metal is 925 sterling silver, so it will not peel or rust. It is not hollow inside; it is solidly constructed entirely of silver. Material: 925 Sterling Silver Width: Approx. 1mm Size: 12 (Japanese size) If you have any questions, please feel free to ask before purchasing. (◍•ᴗ•◍) Scratches, discoloration, etc... none