BBC – h2g2 – Gold – A3327103

Whereas iron rusts away and copper gets covered in a green coating over time (verdigris), gold stays exactly the way it is. Gold is also used in its pure form for some tooth fillings.

h2g2 – Gold

Whereas iron rusts away and copper gets covered in a green coating over time (verdigris), gold stays exactly the way it is. Gold is also used in its pure form for some tooth fillings.

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