Origin
Southern and central Africa
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Color
Black, Brownish, White, Brown
Blue, gray, Black
Streak
Reddish, Black
Blue
For which Rashi?
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Planet
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-
Element of Planets
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Energy
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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
-
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Birthstone
Planetary
-
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Talisman
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Tenacity
-
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Solubility
-
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Durability
-
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Specific Gravity
4.76-5.033-3.15
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal
Cleavage
None
Good on [110] and on [001]
Mohs Hardness
5.5-6.56.0-6.5
2
10
👆🏻
Chemical Composition
(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
[ ]Na2(Mg3Al2)Si8O22(OH)2
Luster
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Vitreous, Pearly
Pleochroism
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Strong
Dispersion
0.030.02
0.005
1
👆🏻
Transparency
Translucent
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Refractive Index
-99991.606-1.637
1
3.25
👆🏻
Optic Character
-
-
Crystal System
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monoclinic
Birefringence
-9999-9999
0
0.296
👆🏻
Clarity
Translucent
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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
Insight
Communication
Healing
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Emotional healing
Qualities Associated
Grounding
Peace