These appear to have never been worn. Excellent condition. I’m not sure of the metal or material. I do not test anything. Needs cleaned. I don’t even wipe them off. There are: Vintage horse earrings Treasure Jewels - Flowers Michelle McDowell It’s Miel - Silver tone drop earrings I’m assuming all are costume as I do not test. Backs may or may not be the right ones. I’m not sure. Lease see photos as they are part of the description. Ships as soon as payment is received. Thanks for looking!