1 Astrology
1.1 Origin
1.2 Color
Brown, Brown, Reddish, Brownish, Yellow, Brown, Reddish, Brownish, Yellow
Black, Brown
1.3 Streak
Brown, Brownish, Yellow
Black
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
HCl soluble
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2.3 Durability
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2.4 Specific Gravity
2.5 Fracture
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Uneven, Uneven, Management Team (2012), Conchoidal, Brittle
2.6 Cleavage
2.7 Mohs Hardness
2.8 Chemical Composition
FeO(OH)Arthur Thomas , Gemstones (2009)
Fe 3O 4Ulrich Henn and Claudio C.
3 Optical Properties
3.1 Luster
3.2 Pleochroism
VisibleArthur Thomas
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3.3 Dispersion
3.4 Transparency
Gemstones (2009)
Gemmological Tables (2004)
3.5 Refractive Index
3.6 Optic Character
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3.7 Crystal System
Orthorhombic
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3.8 Birefringence
0.138Not Available
0
0.296
3.9 Clarity
Gemstones (2009)
Gemmological Tables (2004)
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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