Gold

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Gold

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The price is of 56.73 USD per gram. Beside the traditional use in jewelry, gold can be used as an electrical conductor and to prevent corrosion. The ' gold is the ' chemical element of atomic number 79. Its symbol is Au (from the Latin "aurum"). It is a transition metal soft , heavy , ductile , malleable yellow. The gold, copper and cesium are the only elements in the metallic state, in standard conditions , it is colored (in the sense of being equipped with color ). Unaffected by most chemicals, it is attacked almost exclusively by 'aqua regia , by cyanide ion and mercury . It is found in its natural state in the form of nuggets , flakes and grains in rocks and alluvial deposits . It is used for minting coins and a monetary standard for many nations. It is also used in dentistry , jewelry and industrial electronics . Its ISO code as a currency is XAU . Gold has changed over time as the meaning of a symbol of purity, value and loyalty.

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By Ana Romanelli

Others The Most Expensive Substances in the World .

Maps of Gold

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Others from The Most Expensive Substances in the World

Gold means luxury, isn’t it? The precious metal is often associated with royalty and wealth. However, this metal is not the most expensive substance in the world. You probably knew that gold is not the most expensive stuff in the world in terms of grams. Not even platinum. Try a new look at the most expensive substances by weight.