1 Astrology
1.1 Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Switzerland
1.2 Color
Blue, Green, Brownish, Greenish, Colorless, gray
Brown, Brownish, Yellow, Black, Reddish
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
2.2 Solubility
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2.3 Durability
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2.4 Specific Gravity
2.5 Fracture
Splintery
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
2.6 Cleavage
{010} perfect
Distinct on {010}
2.7 Mohs Hardness
2.8 Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
3 Optical Properties
3.1 Luster
Vitreous, Subadamantine, Silky
Resinous
3.2 Pleochroism
Colourless to pale brown to yellow
X = colorless; Y = pale yellow; Z = golden yellow
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Blue Chart Gem Identification (2010) More from other references
3.5 Refractive Index
1.653-1.6851.736-1.762
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
0.020-0.0220.009-0.015
0
0.296
3.9 Clarity
Transparent
Blue Chart Gem Identification (2010) More from other references
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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