1 Astrology
1.1 Origin
Southern and central Africa
Not Available
1.3 Color
Brown, Black, Blue
Grey, Black, gray
1.5 Streak
1.6 For which Rashi?
Not Available
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1.8 Planet
Not Available
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1.10 Element of Planets
Not Available
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1.11 Energy
Not Available
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1.14 How to Wear?
1.14.1 Finger
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1.0.1 Ring Metal
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1.3 Deities
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1.4 Not to wear with
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1.6 Powers
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1.9 Birthstone
1.9.1 Planetary
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1.15.1 Talisman
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2 Physical Properties
2.1 Tenacity
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2.3 Solubility
Not Available
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3.4 Durability
Not Available
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3.6 Specific Gravity
4.8 Fracture
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)
Brittle, Metallic
4.9 Cleavage
Not Available
Distinct / Good, Prismatic
4.10 Mohs Hardness
5.4 Chemical Composition
SiO 2Ulrich Henn and Claudio C.
Ba(Mn++++,Mn++)8O16
6 Optical Properties
6.1 Luster
Not Available
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6.3 Pleochroism
Definite: brown reddish-brownWalter Schumann
Weak.
7.2 Dispersion
8.6 Transparency
Transparent, Translucent
Not Available
8.7 Refractive Index
1.544-1.553Not Available
1
3.25
8.15 Optic Character
Not Available
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8.16 Crystal System
8.17 Birefringence
0.009Not Available
0
0.296
9.5 Clarity
Transparent
Not Available
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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