Platinum is an element with the symbol Pt and atomic number 78. It belongs to the platinum group of metals, which also includes palladium, rhodium, iridium, osmium, and ruthenium. Platinum is a dense (platinum density: 21450.0 kg/m³), malleable, and ductile metal with a silver-white color. It is known for its resistance to corrosion, excellent catalytic properties, and high melting point.

Platinum is often used in various industrial applications, including catalytic converters in automobiles, as a catalyst in chemical reactions, and in the production of certain electronic components. It is also highly valued in jewelry for its rarity and durability. Additionally, platinum has been historically used for investment purposes, similar to gold and silver. The rarity and versatility of platinum contribute to its status as a precious metal.