Gold and silver are two of the most precious metals on earth. When they are brought out of the ground, though, they are filled with impurities and in dire need of refining. The first part of the process is to subject these precious metals to a furnace that heats them to their melting point. For gold this means a heat of more than 1948 F. The second part for gold is to subject the melted gold to a chemical process which refines it to 99.5% pure. (More)






