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Emerald is a gemstone and a variety of the mineral beryl colored green by trace amounts of chromium and/or sometimes vanadium. Beryl has a hardness of 7.5–8 on the Mohs scale. Most emeralds are highly included, so their toughness is classified as generally poor. Emerald is a cyclosilicate.
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• Emerald is a gemstone.
• Variety of the mineral beryl colored green.
• Thats because of presence of chromium and sometimes vanadium.
• Beryl has a hardness of 7.5–8 on the Mohs scale.
• Most emeralds are highly included, so their toughness is classified as generally poor.
• Emerald is a cyclosilicate.
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