1 Astrology
1.1 Origin
Tanzania, Madagascar, Kenya, Sri Lanka, Burma, Australia
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1.2 Color
Green, Brown, Colorless, Greenish, Yellow
Grey, Black, gray
1.3 Streak
1.4 For which Rashi?
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1.5 Planet
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1.6 Element of Planets
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1.7 How to Wear?
1.7.1 Finger
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1.7.2 Ring Metal
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1.8 Energy
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1.9 Deities
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1.10 Not to wear with
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1.11 Powers
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1.12 Birthstone
1.12.1 Planetary
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1.12.2 Talisman
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2 Physical Properties
2.1 Tenacity
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2.2 Solubility
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2.3 Durability
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2.4 Specific Gravity
2.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven
Brittle, Metallic
2.6 Cleavage
Good on {110}
Distinct / Good, Prismatic
2.7 Mohs Hardness
2.8 Chemical Composition
Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Ba(Mn++++,Mn++)8O16
3 Optical Properties
3.1 Luster
3.2 Pleochroism
X = colorless to green; Y = colorless
Weak.
3.3 Dispersion
3.4 Transparency
Gemmological Tables (2004) More from other references
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3.5 Refractive Index
1.660-1.685Not Available
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
0.012-0.017Not Available
0
0.296
3.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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4 Benefits
4.1 Physical
4.1.1 Neurological
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4.1.2 Cardiovascular
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4.1.3 Respiratory
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4.1.4 Reproductive
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4.1.5 Digestive
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4.2 Psychology
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4.3 Healing
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4.4 Qualities Associated
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