1 Astrology
1.1 Origin
Southern and central Africa
Australia, Southern and central Africa, green, brown, Australia, France, green, brown, Australia, France
1.2 Color
Yellow, Brown, Black, Black
Green, Colorless, gray, Yellow, White
1.3 Streak
1.4 For which Rashi?
1.5 Planet
1.6 Element of Planets
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
1.9 Deities
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
2.2 Solubility
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2.3 Durability
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2.4 Specific Gravity
2.5 Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
2.6 Cleavage
{010} moderate, {100} imperfect
Distinct on [001]
2.7 Mohs Hardness
2.8 Chemical Composition
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Ca2Al2Si3O12(OH)
3 Optical Properties
3.1 Luster
Vitreous, Resinous
Vitreous
3.2 Pleochroism
Faint
AbsentWalter Schumann
3.3 Dispersion
3.4 Transparency
TransparentAnthony et al, Handbook of mineralogy (2001)
Translucent
3.5 Refractive Index
1.827-1.8791.611-1.673
1
3.25
3.6 Optic Character
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3.7 Crystal System
Orthorhombic
Orthorhombic
3.8 Birefringence
0.042-0.0510.021-0.033
0
0.296
3.9 Clarity
TransparentAnthony et al
TranslucentHerve Nicolas Lazzarelli
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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