Cleaning your jewelry regularly can keep it looking good and lasting a long time. Most colored gemstones can be cleaned with warm water, mild dish soap (no detergents) and a soft brush. Be sure to thoroughly rinse your jewelry to remove cleaning solutions.

Rubbing alcohol works well, but bleach does not, and can literally destroy jewelry, so avoid using it. Soft gems, such as pearls, on the other hand, can easily scratch. Use a clean makeup brush and warm, soapy water to gently clean them. 

Don't wear jewelry in swimming pools or spas – chlorinated water can react with the metals found in jewelry causing color changes and even structural damage. As a result it's a good idea to remove jewelry before entering the pool or spa.