sophie - smoky quartz botanical necklace. This is a beautiful, naturally terminated smoky quartz crystal. It is natural and has not been heat treated. The pendant is on a stainless steel cable chain that measures 18" in length. I use the same technique that is used in doing stained glass. The jewelry is made from silver solder (which is composed of tin and copper). The soldering is done directly onto the stone by hand. I put a lot of texture into the metalwork. The finished piece has patina applied and is polished. There is no nickel or harmful metals here. The pendant pictured is the exact one that you will receive.