Gold Comes In A Rainbow of Colors - By: Rodger Ewing, 2009-05-12

Pure gold only comes in one color, but when it is pure it is really too soft to use for much so it is alloyed (or mixed) with a range of different metals. The result is a metal that is hard enough to be useful, but sill malleable enough to manipulate. Adding different metals creates different gold colors (and hardnesses) which is why we have so many gold colors to choose from today.

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