Please read each individual item description for relevance. The Necklaces, bails, and clasps are either .925 Sterling Silver or Double Silver Plated Over Copper (Nickle Free and Lead Free). These elements have a protective coating which will deter tarnishing, however you can best maintain the beauty of your piece by gently washing off body oils and lotions after wearing it, and by keeping your piece in a small airtight bag while not in use. Gently wash with soap and water, dry it well, and polish your necklace and bail with a silver jewelry cleaning cloth many of which are treated to clean and protect silver.