1 Astrology
1.1 Origin
Southern and central Africa
Canada, Russia
1.2 Color
Black, White, Greenish, Brown
Brown, Yellow, Greenish, Brown, Yellow, Greenish, Brown, Brownish, Red, Yellow
1.3 Streak
Greenish, White
Brown, White, 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
2.5 Fracture
Uneven
Uneven, Brittle, Metallic
2.6 Cleavage
{100} Perfect, {010} Perfect
Perfect on [001] imperfect on [100]
2.7 Mohs Hardness
2.8 Chemical Composition
(Fe,Mg) 2Si 2O 6Ulrich Henn and Claudio C.
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
3 Optical Properties
3.1 Luster
Vitreous, Pearly
Greasy, Pearly
3.2 Pleochroism
Green stones strong: (dark) bluish-green brownish-red (yellowish)Herve Nicolas Lazzarelli
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Translucent
3.5 Refractive Index
1.673-1.7311.678-1.758
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
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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