Unique to platinum, it may develop a patina (or gentle sheen) if worn daily. Many people like this look. However, if you prefer the original reflective finish a jeweler can polish it and restore the original shine. Soaking platinum jewelry in a mild solution of soap and warm water and gently scrubbing it with a soft-bristled brush is usually all that is required to maintain the metal's luster. To keep your jewelry shining and scratch-free, store them in their original boxes, soft cloth bags, or a fabric-lined jewelry box. To prolong gold's luster, keep your gold jewelry away from harsh chemicals such as chlorine, ammonia, and cleaning fluids.