Gold coins is mined in underground mines are cold, ie, Russia, USA, South Africa, and in quarries in the hot zone: Africa, Southeast Asia, South America also appears as an impurity in the extraction of other resources, however, the amount extracted in this way is gold relatively small. It is estimated that so far excavated approximately 150 000 tons of gold. The amount of gold in sea water and sediments is estimated at 10 billion tons.

Gold:

- Is widely used in jewelry for the manufacture of jewelry,

- For the manufacture of processors

- For making ornamental objects, sacred and utilitarian (the greatest product of pure gold is a sarcophagus of Tutankhamun – 110 kg)

- gold Is a sought-after and highly valued collectors’ stones (the largest nugget found in Chile in 1951 – 153 kg gold nuggets found in Australia, with masses: 68 kg, 71 kg, 85 kg, 92 kg)

- Formed the basis of monetary systems, is used in coinage

- Is used in electronics (for the manufacture of connectors)

- Is used in radio technology, due to the stable electrical properties and the lack of oxidation

- To “gilding” of other metals

- The production of special glass

- Gold is the component of precious metal such as Coins gold

- Gold is used in medicine and dentistry (crowns, bridges, inlays crown – root)

- As the gold patch in the techniques

Gold compounds are used as a therapeutic agent in rheumatoid arthritis (administered intramuscularly). They inhibit cell proliferation, release of lysosomal enzymes and production of reactive oxygen species in macrophages. Side effect may be: fotosensitive rash, upset stomach and kidney damage. Isotope 198Au (half-life – 2.7 days) is used to treat certain cancers and other diseases.