Science
What are emeralds made out of?
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Emerald is a gemstone and a variety of the mineral beryl colored green by trace amounts of chromium and sometimes vanadium. Beryl has a hardness of 7.5–8 which does reduces the resistance to breakage .
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The chemical composition is Be3Al2(SiO3)6. Emerald's green color is caused by trace amounts of chromium or vanadium.
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