1 Astrology
1.1 Origin
Southern and central Africa
Not Available
1.2 Color
Blue, Grey
Reddish, Brown, Yellow, Green, Red, Greenish, gray
1.3 Streak
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
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1.6 Element of Planets
Not Available
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1.7 How to Wear?
1.7.1 Finger
Not Available
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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
2.2 Solubility
Not Available
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2.3 Durability
Not Available
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2.4 Specific Gravity
2.5 Fracture
Gemstones of the world (2001)
Conchoidal, Uneven, Brittle
2.6 Cleavage
Not Available
Imperfect on {001}, indistinct on {011}
2.7 Mohs Hardness
2.8 Chemical Composition
SiO 2Walter Schumann , Gemstones of the world (2001)
Not Available
3 Optical Properties
3.1 Luster
Not Available
Resinous, Subadamantine
3.2 Pleochroism
Not Available
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3.3 Dispersion
3.4 Transparency
Gemstones of the world (2001)
Not Available
3.5 Refractive Index
1.534-1.5402.180-2.190
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
3.8 Birefringence
Not Available0.090
0
0.296
3.9 Clarity
Gemstones of the world (2001)
Not Available
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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