Emerald
![Emerald crystal from [[Muzo]], [[Colombia]]](https://upload.wikimedia.org/wikipedia/commons/d/df/B%C3%A9ryl_var._%C3%A9meraude_sur_gangue_%28Muzo_Mine_Boyaca_-_Colombie%29_2.jpg)
Emerald is a gemstone and a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium or sometimes vanadium. Beryl has a hardness of 7.5–8 on the Mohs scale. Most emeralds have much material trapped inside during the gem's formation, so their toughness (resistance to breakage) is classified as generally poor. Emerald is a cyclosilicate.
Provided by Wikipedia
81
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
82
[Bradford, West Yorkshire] : MCB University Press, 1996
“...Emerald...”This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
83
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
84
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
85
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
86
87
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
88
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
89
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
90
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
91
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
93
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
94
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
95
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
96
[England] : MCB University Press, 1994
“...Emerald...”This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
97
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
98
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
99
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal
100
This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Journal