Each ring is created from a silver half dollar, which will still be visible on the inside lip of the ring. The inlay and ring can be polished with any glass or silver polish. These quality rings are handmade with passion, care and dedication to each piece. You will not be disappointed in the opal collection!!!! Sizes 4-13 available. (Including 1/2 sizes) Please note that each ring will look slightly different from listing picture depending on the size selection. Smaller rings will be more rounded, and larger rings will have more of a flat look to them(as pictured). Please refrain from using harsh chemicals near the rings as they may tarnish or damage the composition or quality.