This necklace is made of black leather, brass, and large irregular clear quartz crystals. It was handmade by Bells and Thistles. This necklace is quite large, weighing 9oz. Some of the brass has some tarnish, I'm unsure if this could be removed with polishing or not. Each clear quartz piece is unique and different, and they all vary in size. Please keep in mind that crystals occur naturally, therefore they are not perfectly shaped.