Try the following methods:
When you see a light yellow tarnish appearing on the silver, try a liquid, non-abrasive, and unscented aloe-free hand sanitizer, such as Purell. Use a large cotton ball and rotate it regularly to expose unused surfaces, as the tarnish can be very abrasive. Then dry the jewelry with a soft cotton dish cloth.
Ionic cleaners such as Speed-Brite works well on chains. One of the most effective chemical methods which you can do it yourself at home is as follows:
Use an aluminium surface which could be a flat surface, foil, sometimes you can wrap around the object with holes poked in it. Begin by placing the object on the aluminium surface. Make a mixture of simmering water and electrolyte salts. The aluminium is attacked and the sulfur is removed, returning the silver to metal on the surface of the object. It takes only a few minutes.
The easiest way to prevent tarnish is to wipe silver jewelry after every use with a clean soft "silver cloth" and store them in sealed bags or drawers with anti-tarnish strips. An old-fashioned approach is to store jewelry in a drawer or box with camphor or a small bag of activated charcoal! You can also wrap silver jewelry in "silver cloth", a cloth interwoven with silver that absorbs the sulfur first, therefore protecting the object inside from tarnish for a long period of time.




