Sterling silver is an alloy containing metals that react with chemicals found in air and produces tarnish; high moisture levels, exposure to sunlight and contaminants such as salt water increase this reaction. Take steps to protect your sterling silver by
Keep sterling silver in airtight packages, (Ziplocs should work fine)
Use tarnish-resistant products (such as tarnish tabs or strips) that absorb harmful chemicals. We use the tabs below and now include (2 - 4) tabs with copper and sterling silver purchases.
Store metals in a cool, dry place. Most tarnish is easily removed by polishing with a mild abrasive or soaking in an anti-tarnish solution.