Ironically enough, in gemstones, color is often influenced by trace impurities or defects in their crystal structures ... The intensity of a ruby’s red color can vary based on the concentration ...
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Why are rubies red and emeralds green? Their colors come from the same metal in their atomic structureThere are many examples in nature, including gemstones and paint pigments ... 1% of the aluminum in the corundum or beryl crystal when a ruby or emerald forms underground at a high temperature ...
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