All silver does tarnish over time and does require cleaning and polishing to stave this off. We include a polishing pad and anti-tarnish bag with every order to keep your jewelry in to help with this as well. I have noticed that the more I wear my silver pieces, the less they tarnish as contact with your skin does act as a sort of polishing. All of my pieces listed in Sterling Silver are cast from solid .925 Sterling Silver and can tarnish if left out, especially in moisture. If your piece tarnishes very rapidly after you receive it, this is not normal and should be noted. Please reach out right away if this happens as it could be an allergic reaction in your skin.