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Tommydz

If a gold coin was in the ground for 200 yrs would it be damage or tarnish from the earth and moisture ?

or would it come out of the ground shiny

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DukeCityMuscle

High-purity gold does not tarnish much, even when under water or in the dirt.

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Good answer, true.
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patina.

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It wouldn't be exactly shiny but it should be chemically intact.

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Pure gold does not react well with other metals, a coin, because it needs to be hard and is alloyed, will be tarnished to some degree.

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Gold is prized above all other metals because it is chemically inert and will retain it's beautiful lustre for many years. Even buried in the earth or under the sea, gold emerges with little more than a superficial dulling of the surface (patina) which a quick buff will restore to it's original glory.

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