1 Astrology
1.1 Origin
Pakistan, Italy, Russia, China, Brazil, Switzerland, Madagascar, Austria, Canada
Kenya, Southern and central Africa
1.2 Color
Reddish, Brown, Yellow, Green, Red, gray
Green, Brown, Yellow, Red
1.3 Streak
Reddish, White
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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
3.48-3.603.55-3.70
1
7.18
2.5 Fracture
Sub-Conchoidal, Conchoidal, Brittle
Gemstones (2009)
2.6 Cleavage
Distinct on [110], parting on {221}
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2.7 Mohs Hardness
2.8 Chemical Composition
Not Available
Al 2SiO 5Arthur Thomas , Gemstones (2009) More from other references
3 Optical Properties
3.1 Luster
Subadamantine, Resinous
Vitreous
3.2 Pleochroism
Strong: X = nearly colorless; Y = yellow to green; Z = red to yellow-orange
Blue stones strong trichroism: colorless/pale blue (greenish or violet)-blue dark blueHerve Nicolas Lazzarelli
3.3 Dispersion
3.4 Transparency
Not Available
Transparent
3.5 Refractive Index
1.885-1.9901.710-1.735
1
3.25
3.6 Optic Character
3.7 Crystal System
3.8 Birefringence
0.105-0.1350.012-0.033
0
0.296
3.9 Clarity
Not Available
Transparent
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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