These are made with stones from Lake Superior and sterling silver. The silver is oxidized to get the grey color. These stones, 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! We have drilled or cut them in half, 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 These earrings have wood hoops that I carved(sorry I can’t remember what type of wood, probably pine). They also have a dark grey rock on the bottom. The earwires are sterling silver and handmade. This sale is for this item pictured. I have made this style before , but each one is different and a different size. They measure 3 inches from where they hang in your ear to the bottom of the rocks. Please feel free to convo me if you have any questions.