Gold is present almost everywhere - in the earth's crust, seas and rivers, however it is difficult and expensive to get. To obtain one ounce of gold, it is necessary to process from two and a half to three tons of ore. The gold content in the crust is very low - 3 mg / kg, but there are numerous deposits rich in metal.
Global production of gold reaches 2.4 thous. tons per annum. The most important industrial use of gold is in the manufacture of electronics and computers. Gold is used in connectors, switch and relay contacts, soldered joints, connecting wires and connection strips. Gold is also used in aerospace, glassmaking, gold gliding and gold leaf.
Most of the ways that gold is used today have been developed only during the last two or three decades. This trend will likely continue. As our society requires more sophisticated and reliable materials our uses for gold will increase. This combination of growing demand, few substitutes and limited supply will cause the value and importance of gold to increase steadily over time.