Rhodium is a silvery-white metal in the platinum family. It is commonly used to plate silver and base metals in the jewelry industry. It has a bright silver color that is akin to platinum. Because it does not tarnish, it is often used as plating on silver to create a tarnish-resistant piece of jewelry. Rhodium is also harder and more difficult to scratch or scuff than silver. Because it has a brilliant silver color, it's compatible with sterling silver and silver-plated products.