1 Astrology
1.1 Origin
Mexico
Austria, Brazil, Canada, India, Madagascar, Russia, Sri Lanka, USA
1.2 Color
White, Colorless, gray, pink
Red, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black
1.3 Streak
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
2.71-2.723.95-4.30
1
7.18
2.5 Fracture
Handbook of mineralogy (2001), Difficult, Fibrous
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
2.6 Cleavage
2.7 Mohs Hardness
2.8 Chemical Composition
Ca 6Si 6O 17(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
3 Optical Properties
3.1 Luster
Vitreous, Silky
Greasy, Vitreous
3.2 Pleochroism
3.3 Dispersion
3.4 Transparency
Gems, Sixth Edition (2006)
Gemmological Tables (2004) More from other references
3.5 Refractive Index
1.581-1.5931.770-1.820
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
0.010Not Available
0
0.296
3.9 Clarity
Gems
TransparentUlrich Henn and Claudio C. Milisenda
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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