1 Astrology
1.1 Origin
USA
Sri Lanka, India, Brazil
1.2 Color
Colorless, White, Green, White, Green, Brown, Colorless, Green, White, White
Green, Brown, Brown, Colorless, Green, gray, Yellow
1.3 Streak
White
Brownish, White, Brownish, White
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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1.2 Powers
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1.3 Birthstone
1.4.0 Planetary
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1.5.1 Talisman
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2 Physical Properties
2.1 Tenacity
2.4 Solubility
Easily soluble in cold dilute HCl
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2.5 Durability
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2.8 Specific Gravity
3.5 Fracture
Brittle, Uneven, Brittle, Uneven
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
3.6 Cleavage
Good in two directions parallel to the prism faces {110}
none
3.7 Mohs Hardness
4.4 Chemical Composition
CaZn(AsO4)(OH)
Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
5 Optical Properties
5.1 Luster
Subadamantine, Silky, Fibrous
Greasy, Vitreous
5.2 Pleochroism
5.3 Dispersion
5.6 Transparency
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Gemmological Tables (2004) More from other references
5.7 Refractive Index
5.11 Optic Character
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5.12 Crystal System
5.13 Birefringence
6.5 Clarity
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TransparentUlrich Henn and Claudio C. Milisenda
7 Benefits
7.1 Physical
7.1.1 Neurological
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7.1.2 Cardiovascular
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7.1.3 Respiratory
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7.1.4 Reproductive
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7.1.5 Digestive
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7.2 Psychology
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7.3 Healing
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7.4 Qualities Associated
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