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15. Gold – $56 per gram
Although the price and value of gold does fluctuate quite significantly according to markets, this element has been prized for thousands of years as a symbol of wealth and prosperity.In addition to acting as a form of currency, gold is found in a wide variety of jewelry, art and decorations. As an inert heavy metal with excellent conductivity, gold is also used in a wide variety of electronics, even providing a coating for satellites in space. Medical uses include dental implants and wires as well as treating arthritis and even cancer.
