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. This stone, along with all the stones in my jewelry, have been found by my husband and myself at Lake Superior. Yes, we spend a lot of time at the beach! The majority of these rock are basalt. We may have drilled or cut 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 pendant is three silver ovals linked with a dark brown rock on each side. It is on a silver rolo chain with a lobster clasp. 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 necklace measures approx 20 inches. The chain length could be changed if need be. Please feel free to convo me if you have any questions.