1 Astrology
1.1 Origin
Not Available
Southern and central Africa
1.2 Color
Grey, Brown
Yellow, White
1.3 Streak
Not Available
gray, Brownish, Black
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
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Not Available
1.6 Element of Planets
Not Available
Not Available
1.7 How to Wear?
1.7.1 Finger
Not Available
Not Available
1.7.2 Ring Metal
Not Available
Not Available
1.8 Energy
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Not Available
1.9 Deities
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1.10 Not to wear with
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1.11 Powers
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1.12 Birthstone
1.12.1 Planetary
Not Available
Not Available
1.12.2 Talisman
Not Available
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2 Physical Properties
2.1 Tenacity
Not Available
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2.2 Solubility
Not Available
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2.3 Durability
Not Available
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2.4 Specific Gravity
2.5 Fracture
Not Available
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven
2.6 Cleavage
Not Available
{010} Indistinct
2.7 Mohs Hardness
2.8 Chemical Composition
Not Available
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Not Available
NilArthur Thomas
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
3.5 Refractive Index
Not AvailableNot Available
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
Not Available
Not Available
3.8 Birefringence
Not AvailableNot Available
0
0.296
3.9 Clarity
Transparent
Gemmological Tables (2004) More from other references
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
Not Available
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4.2 Psychology
Not Available
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4.3 Healing
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4.4 Qualities Associated
Not Available
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