Silver Forest Earrings Silvertone Multi Circle Black White Yin Yan Symbol 1" X 1" Earwires are surgical steel or surgical steel with a 18k gold overlay. There is no nickel used in the plating process. They use genuine semi-precious stones. They also use glass beads, natural materials, and genuine crystal to accent. Their metals consist of raw brass or copper. Each shape or disk is cut and rolled out with their own unique textures. All of their jewelry is Lead free and Cadmium free. All of their jewelry is soldered, never glued. They use three distinct color processes in the finishing of their jewelry. There will be slight color variations in the jewelry due to the different textures on the metal and how each process adheres to a particular piece of metal.