1 Astrology
1.1 Origin
USA
Madagascar, Southern and central Africa
1.2 Color
Brown, Red, Black, Brownish
Grey, Brownish, Blue, Colorless, White, gray, Reddish
1.3 Streak
Reddish, Brown, Reddish, Brown
White
1.4 For which Rashi?
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1.5 Planet
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1.6 Element of Planets
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1.7 How to Wear?
1.7.1 Finger
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1.7.2 Ring Metal
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1.8 Energy
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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
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1.12.2 Talisman
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2 Physical Properties
2.1 Tenacity
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2.2 Solubility
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2.3 Durability
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2.4 Specific Gravity
5.05-5.222.54-2.61
1
7.18
2.5 Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
Uneven, Uneven, Gems, Sixth Edition (2006)
2.6 Cleavage
None
{001} Perfect, {010} Good
2.7 Mohs Hardness
2.8 Chemical Composition
(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
3 Optical Properties
3.1 Luster
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3.2 Pleochroism
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WeakMichael OâDonoghue
3.3 Dispersion
3.4 Transparency
3.5 Refractive Index
Not Available1.518-1.536
1
3.25
3.6 Optic Character
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3.7 Crystal System
Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m
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3.8 Birefringence
Not Available0.005-0.008
0
0.296
3.9 Clarity
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
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4.2 Psychology
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4.3 Healing
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4.4 Qualities Associated
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