1 Astrology
1.1 Origin
Southern and central Africa
Austria, Brazil, Canada, India, Madagascar, Russia, Sri Lanka, USA
1.2 Color
Black, Reddish, gray
Red, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black
1.3 Streak
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
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1.6 Element of Planets
Not Available
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1.7 How to Wear?
1.7.1 Finger
Not Available
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1.7.2 Ring Metal
Not Available
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1.8 Energy
Not Available
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1.9 Deities
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1.10 Not to wear with
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1.11 Powers
Not Available
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1.12 Birthstone
1.12.1 Planetary
Not Available
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1.12.2 Talisman
Not Available
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2 Physical Properties
2.1 Tenacity
2.2 Solubility
Not Available
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2.3 Durability
Not Available
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2.4 Specific Gravity
5.51-5.643.95-4.30
1
7.18
2.5 Fracture
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
2.6 Cleavage
Distinct on {10 1 1}
none
2.7 Mohs Hardness
2.8 Chemical Composition
Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
3 Optical Properties
3.1 Luster
Adamantine
Greasy, Vitreous
3.2 Pleochroism
Moderate; cochineal-red to blood-red
None
3.3 Dispersion
3.4 Transparency
OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Rarely transparentMore from other references
Gemmological Tables (2004) More from other references
3.5 Refractive Index
2.792-3.0871.770-1.820
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.295-0.296Not Available
0
0.296
3.9 Clarity
OpaqueUlrich Henn and Claudio C. Milisenda
TransparentUlrich Henn and Claudio C. Milisenda
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
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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
Not Available
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