Rhodium is a rare transition metal that has a bright silvery white color in its natural solid state. It is known for its strength and hardness, as well as its high reflecting characteristics. Rhodium has an atomic weight of 102.90550, a melting point of 3567 °F, and a boiling point of 6683 °F. Common uses of rhodium include: as a component in platinum and palladium alloys to strengthen the alloy, as a component in electrical contact material, plating for use in optical instruments, and as a component in some jewelry.