1 Astrology
1.1 Origin
Canada
Southern and central Africa
1.2 Color
Reddish, White, Violet, gray, Black, Reddish, White, Violet, gray, Black
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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
UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic
Conchoidal, Conchoidal, Gemstones of the world (2001)
2.6 Cleavage
{100} Good, {010} Good, {001} Good
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2.7 Mohs Hardness
2.8 Chemical Composition
CoAsSAnthony et al , Handbook of mineralogy (2001)
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3 Optical Properties
3.1 Luster
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3.2 Pleochroism
Very weak
AbsentWalter Schumann
3.3 Dispersion
3.4 Transparency
3.5 Refractive Index
Not Available1.37-1.52
1
3.25
3.6 Optic Character
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3.7 Crystal System
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: P ca21
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3.8 Birefringence
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0
0.296
3.9 Clarity
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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