1 Astrology
1.1 Origin
Australia, Brazil, Canada, Colombia, Madagascar, Zimbabwe
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1.2 Color
Brown
White, Colorless, Blue, Red, Green, Yellow, Violet
1.3 Streak
Brownish, Red, Black
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1.5 For which Rashi?
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1.6 Planet
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1.8 Element of Planets
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1.9 How to Wear?
1.10.1 Finger
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1.10.2 Ring Metal
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1.11 Energy
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1.12 Deities
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1.13 Not to wear with
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1.14 Powers
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1.15 Birthstone
1.15.1 Planetary
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1.15.2 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
3.5 Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)
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3.6 Cleavage
Good in one direction
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3.7 Mohs Hardness
3.8 Chemical Composition
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
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4 Optical Properties
4.1 Luster
4.2 Pleochroism
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4.3 Dispersion
4.4 Transparency
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
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4.5 Refractive Index
2.190-2.457Not Available
1
3.25
4.6 Optic Character
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4.7 Crystal System
Orthorhombic
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4.8 Birefringence
0.083Not Available
0
0.296
4.9 Clarity
TransparentWalter Schumann
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5 Benefits
5.1 Physical
5.1.1 Neurological
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5.1.2 Cardiovascular
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5.1.3 Respiratory
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5.1.4 Reproductive
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5.1.5 Digestive
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5.2 Psychology
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5.3 Healing
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5.4 Qualities Associated
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