ALL SILVER PIECES ARE MADE FROM .925 STERLING SILVER AND ARE NICKEL FREE. SILVER WILL NATURALLY OXIDIZE IF LEFT UNUSED, AND TARNISH WITH TIME. SILVER TARNISHES WHEN EXPOSED TO AIR, MOISTURE, PERSPIRATION AND CHEMICALS. THEREFORE IT IS RECOMMENDED TO STORE YOUR JEWELRY IN A DRY PLACE AND NOT TO EXPOSE IT TO BEAUTY PRODUCTS SUCH AS PERFUMES OR LOTIONS WHILST WEARING IT. SILVER IS A SOFT METAL AND MAY POSSIBLY SCRATCH OVER TIME. USING A SOFT JEWELRY POLISHING CLOTH OR A MICROFIBER CLOTH AND SOME SLIVER POLISH CAN HELP MAINTAINING THE ORIGINAL SILVER FINISH.