These kinetic earrings made of sterling and 18K plated sterling, and all have some kind of movement. (The shapes rotate or rock back and forth). The earwires are sterling silver plated with 18K gold, left sterling where they rest in the ear. The stones are all natural except for the Austrian cubic zirconia, the sparkliest Keith could find. The brightly colored metal is Niobium. The pyramid earrings are made from a material made from recycled water bottles!