Tungsten. Source: Wikipedia

Tungsten (symbol W) is an extremely hard, heavy, steel-gray metal that is one of the heaviest of all the elements, amazing for its strong physical properties and vast uses. It has the highest melting point of all the non-alloyed metals (3,410°C), the lowest vapor pressure and the highest tensile strength (19.3 gms/cc).

As it weighs about the same as gold, it is often used to produce fake gold bars, plated with real gold.