In the various countries gold is used as the standard for a monetary and credit exchange, in stamping and in jewelry. Pure gold is too soft for usual use and typically becomes stronger, float with copper or other basic components of an alloy. The gold maintenance of gold alloys is measured in carats (k), and pure gold is defined under the standard as 24 KB.



The gold coins intended for the reference, since 1526 and on 1930 year inclusive, typically were the standard alloy of 22 KB named gold of a crown, for hardness. Modern coins or ingots of the collector/investments (which do not demand good mechanical properties of wear process) typically - 24 KB, though the American Gold Eagle and British gold sovereign continue to become in 22 KB, by historical tradition. The Canadian Gold coin of Sheet of the Maple contains the highest gold of cleanliness of any popular coin of an ingot, in 99.999 % (99999 penalties). Some other pure gold coins on 99.99 % are accessible now, including Gold Kangaroos of Australia (at first appearing in 1986 as the Australian Gold Nugget, with the theme of a kangaroo appearing in 1989), some coins of the Australian Lunar Calendar number, and the Austrian Philharmonic society. In 2006 the American Mint has begun manufacture of the American coin of gold in ingots Buffalo also in cleanliness on 99.99 %.



Today, gold is not used for stamping the daily coins made for the general reference.