Why Do Metals Tarnish? A metal mix in jewelry may cause tarnished or corroded metal. Read More caring for jewelryCarole SheltonMay 13, 2019Carole Sheltonjewelry storage, recycled jewelry, tarnished metal, eco friendly jewelry, How to prevent silver from tarnishing, Prevent silver tarnish, Why do metals tarnish, Aluminum jewelry, aluminum wire jewelry, metal mix, mixed metal jewelry