How To Clean Black Earrings. Store them a dry safe place. Lay all of your darkened costume jewelry on the foil.
Lay all of your darkened costume jewelry on the foil. Let the earrings sit out to dry for about 30 minutes. Baking Soda and Aluminum Foil Add boiling water and baking soda to a bowl layered with aluminum foil.
Using a clean dry cloth gently pat the earrings to get rid of leftover water.
Rinse well with warm water and dry immediately with a soft cotton cloth. If your pearls are visibly stained you can mix a solution of lukewarm water and mild dish soap dip a soft cleaning cloth in it and wipe the pearls. Mix dish soap and warm water in a large bowl. Any commercially available dish detergent should work.