The earrings are made of polymer clay, they are light on the ear and finished with surgical steel, nickel-free ear posts. All earrings are designed and made by me in my Arizona studio. *** All of our earrings have double reinforcement on the earring posts, bonding the polymer to a molding agent guaranteeing the post will not pop off, as many other polymer earrings do. ***See this in the last image. Earring measures 3.25" height x 2" width.