1 Astrology
1.1 Origin
Southern and central Africa
India
1.2 Color
Brown, Black, Blue
Colorless, White, Yellow, Green, White, pink, Green, Yellow, Violet, White, pink, Green, Yellow, Violet
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
Not Available
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1.8 Energy
Not Available
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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
Not Available
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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
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven, Brittle, Uneven, Brittle, Uneven
2.6 Cleavage
Not Available
Perfect on {001}, imperfect on {110}
2.7 Mohs Hardness
2.8 Chemical Composition
SiO 2Ulrich Henn and Claudio C.
(K,Na)Ca4Si8O20(F,OH)•8(H2O)
3 Optical Properties
3.1 Luster
Not Available
Vitreous, Pearly
3.2 Pleochroism
Definite: brown reddish-brownWalter Schumann
Not Available
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Not Available
3.5 Refractive Index
1.544-1.5531.530-1.536
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
3.8 Birefringence
0.009Not Available
0
0.296
3.9 Clarity
Transparent
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
Not Available
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