1 Astrology
1.1 Origin
Kenya, Southern and central Africa
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1.2 Color
Green, Brown, Yellow, Red
White, Pale pink, Brown, Yellow, pink
1.3 Streak
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White, Pale pink
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
2.3 Durability
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2.4 Specific Gravity
2.5 Fracture
Gemstones (2009)
Subconchoidal, Brittle, Conchoidal
2.6 Cleavage
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Perfect on {10 1 1}
2.7 Mohs Hardness
2.8 Chemical Composition
Al 2SiO 5Arthur Thomas , Gemstones (2009) More from other references
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3 Optical Properties
3.1 Luster
3.2 Pleochroism
Blue stones strong trichroism: colorless/pale blue (greenish or violet)-blue dark blueHerve Nicolas Lazzarelli
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3.3 Dispersion
3.4 Transparency
Transparent
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3.5 Refractive Index
3.6 Optic Character
3.7 Crystal System
3.8 Birefringence
0.012-0.033Not 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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