1 Astrology
1.1 Origin
India, Southern and central Africa, Madagascar
Southern and central Africa, Brazil, China, Zimbabwe, Switzerland, Zimbabwe, Switzerland
1.2 Color
Black, Brownish, Greenish
Green
1.3 Streak
1.4 For which Rashi?
1.5 Planet
Not Available
Mars, Venus
1.6 Element of Planets
1.7 How to Wear?
1.7.1 Finger
Not Available
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1.7.2 Ring Metal
Not Available
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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
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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
3.18-3.222.85-3.20
1
7.18
2.5 Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Not Available
2.6 Cleavage
{1011} Indistinct
Not Available
2.7 Mohs Hardness
2.8 Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Not Available
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Very strong: yellow-brown pale yellow
Not Available
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Gemstones of the world (2001)
3.5 Refractive Index
3.6 Optic Character
Not Available
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3.7 Crystal System
3.8 Birefringence
0.025Not Available
0
0.296
3.9 Clarity
Transparent
Gemstones of the world (2001)
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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