1 Astrology
1.1 Origin
Switzerland
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
1.2 Color
Brown, Brownish, Yellow, Black, Reddish
Blue, Violet, Greenish, Brown, Colorless, Colorless, Blue, Violet, Yellow, gray
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
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Subconchoidal, Conchoidal, Brittle
2.6 Cleavage
Distinct on {010}
Fair on {100}, poor on {001} and {010}
2.7 Mohs Hardness
2.8 Chemical Composition
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Mg2Al4Si5O18
3 Optical Properties
3.1 Luster
Resinous
Greasy, Vitreous
3.2 Pleochroism
X = colorless; Y = pale yellow; Z = golden yellow
X = pale yellow
3.3 Dispersion
3.4 Transparency
Blue Chart Gem Identification (2010) More from other references
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3.5 Refractive Index
1.736-1.762Not Available
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
0.009-0.015Not Available
0
0.296
3.9 Clarity
Blue Chart Gem Identification (2010) More from other references
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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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