Our hammered Sterling Silver thumb ring is amazing. Hammered and polished, it's simple and elegant. The cuff is easily adjustable. The ring is roughly 1/2" wide. Each ring can be created for different ring sizes. Small gift box included. The Sterling Silver consists of 92.5% Silver and 7.5% of an alloy, mainly consisting of copper. In some, the copper reacts with the skin and can turn it green. NOTE: Each piece is in its natural state. It’s not coated with anything to prevent tarnish. Oils, lotions, moisture, etc. will accelerate the tarnish, so its recommended that you use a jewelry cloth for cleaning after wearing your jewelry. Choking Hazard - Small Parts WARNING: CHOKING HAZARD—Small parts Not intended for children.