While gold does not tarnish, as other precious metals might, it can still lose its luster and discolor if not cleaned properly. The easiest way to clean gold jewelery is by using mild detergent, dissolved in water. Soak the jewelery briefly, then clean it well with a small brush. Be sure to get any dirt or oil build-up that has collected in creases or crevices of the jewelery. Then rinse well and polish with a soft cloth to be sure that there is no water or soap left on the gold.