1 Astrology
1.1 Origin
Southern and central Africa
Canada, USA, Italy, Russia, Switzerland, Tanzania, Kenya, Sri Lanka
1.2 Color
Brown, Brownish, White, Colorless, Yellow
Green, Yellow, Brown, Violet, Blue
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
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2.2 Solubility
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2.3 Durability
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2.4 Specific Gravity
1.58-1.60Not Available
1
7.18
2.5 Fracture
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
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2.6 Cleavage
{011} Imperfect
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2.7 Mohs Hardness
2.8 Chemical Composition
Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.
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3 Optical Properties
3.1 Luster
3.2 Pleochroism
Weak: yellowish brown yellowAnthony et al
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3.3 Dispersion
3.4 Transparency
Gemmological Tables (2004) More from other references
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3.5 Refractive Index
1.509-1.5411.67-1.76
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
0.030Not Available
0
0.296
3.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Color grading system
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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