It is estimated that all the gold in the world, so far refined, could be placed in a single cube 60 ft. on a side. Of all the elements, gold in its pure state is undoubtedly the most beautiful. It is metallic, having a yellow color when in a mass, but when finely divided it may be black, ruby, or purple.It is a good conductor of heat and electricity, and is unaffected by air and most reagents.
Melting point: 1064.18 °C Boiling point: 2856 °C
A foil is a thin sheet of pure metal. Given its fragile nature, some foils have protective coatings.