1 Astrology
1.1 Origin
Southern and central Africa
Not Available
1.2 Color
Brown, Black, Blue
Yellow, Brownish, Reddish, Green, Brownish, Yellow, Green, Yellow, Red
1.3 Streak
Not Available
White, Yellow
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
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven
2.6 Cleavage
2.7 Mohs Hardness
2.8 Chemical Composition
SiO 2Ulrich Henn and Claudio C.
(Fe+++,Al)25(PO4)17O6(OH)12•75(H2O)
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Definite: brown reddish-brownWalter Schumann
visible: O = Pale yellow E = Canary yellow to yellow orange
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
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3.5 Refractive Index
1.544-1.5531.575-1.585
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
0.009Not Available
0
0.296
3.9 Clarity
Transparent
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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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