Sterling silver is a beautiful metal that will last for generations with proper care. To prevent tarnish, It should be take care from humidity. Silver jewellery is also as sensitive like pearl jewellery. So, Storing your sterling silver in the open air and humidity for extended periods of time can cause it to tarnish quickly. Tarnish first appears as a golden hue on your sterling silver then quickly turns to black. This is a normal process that is caused by oxidization and moisture from air and believe it or not sunshine. To keep tarnish to a minimum it is advised that you store your jewelry pieces when not wearing them.
To store your pieces, keep them in small ziplock bags with no holes. Get the smallest bags you can find. If the piece comes in a tiny bag, keep it until it wears out. Ziplock makes snack size bags which can hold several pieces at once. If you find a hole in a bag, get another one. This reduces the exposure of your jewelry to the compounds which cause tarnish and will reduce the amount of polishing you'll have to do.
Polishing your silver will remove the tarnish. You can use a liquid on most silver jewelry. With the liquid, you dip in your jewelry, swirl, remove and rinse. Follow the directions. If it says do not use it on a piece with a stone in it, then don't. It could damage your stone. By keeping your pieces in their bags, you may find you only need this for a good annual cleaning or to take off a really thick layer of tarnish.
As with all jewelry, do not wear silver jewelry in a swimming pool or hot tub or when using ammonia or cleaning bleach at home. Bleach, including chlorine, will attack and dissolve the metal so that the more delicate parts will come undone. Don't wear silver jewelry in the shower either. Soap residue builds up causing a dull finish on the silver that's difficult to remove. Also, don't use rubber bands to wrap your jewelry bags together.