atomic number 79 - a soft yellow malleable ductile (trivalent and univalent) metallic element; occurs mainly as nuggets in rocks and alluvial deposits; does not react with most chemicals but is attacked by chlorine and aqua regiagold - coins made of gold noble metal - any metal that is resistant to corrosion or oxidation gold dust - the particles and flakes (and sometimes small nuggets) of gold obtained in placer mining green gold - a gold alloy (at least 14 karat gold with silver or silver and cadmium) that has a green appearance guinea gold - 22-karat gold from which guinea coins were made graphic tellurium, sylvanite - a silver-white mineral consisting of silver gold telluride; a source of gold in Australia and America |