1 Astrology
1.1 Origin
Not Available
Tanzania, Madagascar, Kenya, Sri Lanka, Burma, Australia
1.2 Color
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Green, Brown, Colorless, Greenish, Yellow
1.3 Streak
1.4 For which Rashi?
1.5 Planet
Venus, Moon
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1.6 Element of Planets
Earth, Water
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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
1.9 Deities
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1.10 Not to wear with
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1.11 Powers
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
Not Available3.25-3.45
1
7.18
2.5 Fracture
Not Available
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven
2.6 Cleavage
Not Available
Good on {110}
2.7 Mohs Hardness
2.8 Chemical Composition
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Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
3 Optical Properties
3.1 Luster
3.2 Pleochroism
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X = colorless to green; Y = colorless
3.3 Dispersion
3.4 Transparency
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Gemmological Tables (2004) More from other references
3.5 Refractive Index
Not Available1.660-1.685
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
Not Available0.012-0.017
0
0.296
3.9 Clarity
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TransparentUlrich Henn and Claudio C. Milisenda
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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