Rhodium is a rare, silvery-white metal that belongs to the platinum group of metals. It is known for its high reflectivity and resistance to corrosion, making it valuable in various industrial applications. Rhodium is primarily used in catalytic converters for vehicles, which help reduce harmful emissions, and in jewelry to enhance the shine of white gold. Discovered in 1803 by William Hyde Wollaston, rhodium is one of the rarest elements in the Earth's crust. Its scarcity contributes to its high market value. Additionally, rhodium is used in electrical contacts and as a catalyst in chemical reactions, further highlighting its importance in modern technology.