1 Astrology
1.1 Origin
Southern and central Africa
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1.2 Color
Black, Reddish, gray, Red
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1.3 Streak
Black, Brown, Reddish, Red
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1.4 For which Rashi?
Aries, Aquarius, Aries, Aquarius, Aries, Aquarius
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1.5 Planet
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
1.9 Deities
1.10 Not to wear with
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1.11 Powers
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
5.00-5.30Not Available
1
7.18
2.5 Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
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2.6 Cleavage
None, may show partings on {0001} and {10 1 1}
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2.7 Mohs Hardness
2.8 Chemical Composition
Fe 2O 3Arthur Thomas , Gemstones (2009)
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3 Optical Properties
3.1 Luster
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3.2 Pleochroism
O = brownish red; E = yellowish red
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3.3 Dispersion
3.4 Transparency
OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
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3.5 Refractive Index
3.6 Optic Character
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3.7 Crystal System
Trigonal
cubic (α)<570 °C
3.8 Birefringence
0.280Not Available
0
0.296
3.9 Clarity
OpaqueHerve Nicolas Lazzarelli
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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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