1 Astrology
1.1 Origin
Southern and central Africa
Not Available
1.2 Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Reddish, Brown, Yellow, Green, Red, Greenish, gray
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
2.2 Solubility
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2.3 Durability
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2.4 Specific Gravity
2.5 Fracture
Conchoidal, Conchoidal, 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 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
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3 Optical Properties
3.1 Luster
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Resinous, Subadamantine
3.2 Pleochroism
AbsentWalter Schumann
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3.3 Dispersion
3.4 Transparency
Translucent
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3.5 Refractive Index
1.37-1.522.180-2.190
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
Not Available0.090
0
0.296
3.9 Clarity
Translucent
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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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