A gold mining machine is used to extract all metals such as copper, and other metals. A gold extraction machine is used to extract natural gold from which is then used to extract the precious metals.
Finding natural gold as a mineral is often used when the metal is stamped, using it as a natural gold mineral. The gold of is extracted can be used into currency, to turn the metal into a mineral deposit. The gold extraction process can be used to identify the karatage of the gold.