Gold is a chemical element with Au symbol that comes from Latin aurum, which translates as a glow of a sunrise. It is a soft malleable and ductile metal with a bright yellow colour and high luster. Its density is 19.30 g·cm−3 and it is one of least reactive elements known, immune to oxidisation and most acids. It can be dissolved by aqua regia, a nitro-hydrochloric acid, alkaline solutions of cyanide and by mercury, it is insoluble in nitric acid that dissolves silver and other basic metals which is a base of gold "acid test". A combination of an attractive look , rarity and chemical resistance is what made gold so desirable for ornamental and jewellery purposes, which in turn made it a perfect medium to store value. At present the consumption of new mined gold is about 50% into jewellery, 40% into investment and 10% into industrial uses ( electronics, dentistry etc.).
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