Origin
Southern and central Africa
Southern and central Africa
Color
Black, Reddish, gray
Black
Streak
Black, Red
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For which Rashi?
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-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
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Ring Metal
-
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Deities
-
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Not to wear with
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-
Powers
-
-
Birthstone
Planetary
-
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Talisman
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Tenacity
Brittle
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Solubility
-
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Durability
-
-
Specific Gravity
5.51-5.642.33-2.50
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Conchoidal
Cleavage
Distinct on {10 1 1}
None
Mohs Hardness
2.55-5.5
2
10
👆🏻
Chemical Composition
Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO2
Luster
Adamantine
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Pleochroism
Moderate; cochineal-red to blood-red
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Dispersion
0.030.01
0.005
1
👆🏻
Transparency
OpaqueUlrich Henn and Claudio C. Milisenda
Transparent, Translucent
Refractive Index
2.792-3.0871.450-1.550
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Trigonal
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Birefringence
0.295-0.296-9999
0
0.296
👆🏻
Clarity
OpaqueUlrich Henn and Claudio C. Milisenda
Transparent
Physical
Neurological
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Cardiovascular
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Respiratory
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Good
Reproductive
-
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Digestive
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Psychology
-
Protection
Healing
Emotional healing
Emotional healing
Qualities Associated
Vitality
Balance