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Why are rubies red and emeralds green? Their colors come from the same metal in their atomic structure
Both rubies and emeralds are minerals, which is a type of rock with a consistent chemical composition and a highly ordered structure at the atomic level. When this highly ordered structure extends ...
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Minerals and Gems
More than 4,000 naturally occurring minerals—inorganic solids that have a characteristic chemical composition and specific crystal structure ... but diamonds, rubies, sapphires, and emeralds ...