This piece is made with stones from Lake Superior and sterling silver. The silver is oxidized to get the grey color. All links are soldered shut. These stones, along with all the stones in my jewelry, have been found by my husband and myself at Lake Superior. We have drilled them but otherwise they are un-altered and untreated. They will absorb some of your oils and deepen in color and take on a beautiful sheen. I try to find fairly thin rocks and I think you will find them to be much lighter than you would expect. Each piece is unique. This bracelet is a handmade sterling box filled with 4 rocks of varying shades. The band has a hinge on one side and a hook on the other. It is actually fairly easy to get on and off yourself, which can be rare for bracelets. This sale is for this item pictured. I do make this style often, but each one is different and a different size. I have several of this style available, and I’m working on getting them up here, but if you want to see other options, please convo me. The inside measures, as best as I can measure, 7 inches. It should fit closely, you don't want it to spin around. I would say it is medium to large size. Please feel free to convo me if you have any questions.