Perfect Witchy Earrings for Halloween/ October. These Costume earrings are drop/dangle style with hypo allergenic .925 silver stamped ear wire hooks with rubber plastic backs with plated alloy stainless steel charms. Jewelry charms not made from precious metals ie; Silver, Gold, Platinum will tarnish over time, even if plated. A quick coat of clear nail polish every so often will help with longevity.