1 Astrology
1.1 Origin
Australia, Brazil, Canada, Colombia, Madagascar, Zimbabwe
Southern and central Africa
1.2 Color
Brown
Green, Blue, Yellow, Red
1.3 Streak
Brownish, Red, Black
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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
2.5 Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)
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2.6 Cleavage
Good in one direction
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2.7 Mohs Hardness
2.8 Chemical Composition
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Y 3Al 5O 12Ulrich Henn and Claudio C.
3 Optical Properties
3.1 Luster
3.2 Pleochroism
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3.3 Dispersion
1.4 Transparency
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
Gemmological Tables (2004)
1.5 Refractive Index
1.8 Optic Character
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1.9 Crystal System
Orthorhombic
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1.10 Birefringence
0.083Not Available
0
0.296
1.14 Clarity
TransparentWalter Schumann
TransparentUlrich Henn and Claudio C. Milisenda
2 Benefits
2.1 Physical
2.1.1 Neurological
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2.1.2 Cardiovascular
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2.1.3 Respiratory
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2.1.4 Reproductive
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2.1.5 Digestive
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2.3 Psychology
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2.4 Healing
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2.5 Qualities Associated
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