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Search "Emerald"
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Emerald | |
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About 9 pages (2,775 words) in 3 products |
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Encyclopedia and Summary Information
summary from source:
 Emerald Information
2,126 words, approx. 7 pages
 Emeralds are a variety of the mineral beryl (Be3Al2(SiO3)6,) colored green by trace amounts of chromium and sometimes vanadium.[1]. Beryl has a hardness of 7.5 - 8 on the 10 point Mohs scale of mineral hardness.[2] Most emeralds are highly included, so... 
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Emerald | |
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About 9 pages (2,775 words) in 3 products |
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