1 Astrology
1.1 Origin
Canada
Southern and central Africa
1.2 Color
Reddish, White, Violet, gray, Black, Reddish, White, Violet, gray, Black
Blue, Grey
1.3 Streak
1.4 For which Rashi?
Not Available
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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
Gemstones of the world (2001)
2.6 Cleavage
{100} Good, {010} Good, {001} Good
Not Available
2.7 Mohs Hardness
2.8 Chemical Composition
CoAsSAnthony et al , Handbook of mineralogy (2001)
SiO 2Walter Schumann , Gemstones of the world (2001)
3 Optical Properties
3.1 Luster
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3.2 Pleochroism
3.3 Dispersion
3.4 Transparency
Gems
Gemstones of the world (2001)
3.5 Refractive Index
Not Available1.534-1.540
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
Not AvailableNot Available
0
0.296
3.9 Clarity
Gems
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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