If the bracelet is dirty(not tarnished), soak it in a cup of warm water with a teaspoon of ammonia for 1/2 hour then rinse and air dry. The stones will sparkle. If the bracelet is tarnished, use a pea sized dab of silver polish or white toothpaste (not gel), rub it into the wet bristles of an old soft toothbrush, then use the brush all over the bracelet.
Do not scrub too hard, because if the bracelet is silver plate. it may come off. Rinse and air dry. Do not use either of these methods on opal, pearl or real turquoise jewelry. I have cleaned both good and costume jewelry. The only problem I have ever had was some "jewels" came unglued after soaking. Never had a problem with real stones. Hope this helps.
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