1 Astrology
1.1 Origin
Austria, Brazil, Canada, India, Madagascar, Russia, Sri Lanka, USA
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1.2 Color
Red, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black
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1.1 Streak
1.3 For which Rashi?
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1.5 Planet
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1.7 Element of Planets
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1.9 Energy
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1.10 How to Wear?
1.10.1 Finger
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1.11.1 Ring Metal
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1.2 Deities
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1.5 Not to wear with
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1.9 Powers
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1.12 Birthstone
1.12.1 Planetary
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1.16.2 Talisman
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2 Physical Properties
2.2 Tenacity
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2.3 Solubility
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4.1 Durability
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4.4 Specific Gravity
4.12 Fracture
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
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4.13 Cleavage
4.15 Mohs Hardness
6.2 Chemical Composition
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
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7 Optical Properties
7.1 Luster
Greasy, Vitreous
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7.3 Pleochroism
7.4 Dispersion
7.12 Transparency
Gemmological Tables (2004) More from other references
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7.13 Refractive Index
1.770-1.8201.610-1.830
1
3.25
8.7 Optic Character
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8.9 Crystal System
8.10 Birefringence
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0
0.296
9.5 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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10 Benefits
10.1 Physical
10.1.1 Neurological
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10.1.2 Cardiovascular
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10.1.3 Respiratory
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10.1.4 Reproductive
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10.1.5 Digestive
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10.2 Psychology
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10.3 Healing
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10.4 Qualities Associated
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