1 Astrology
1.1 Origin
Madagascar, Southern and central Africa
Brazil, Southern and central Africa, Sri Lanka
1.2 Color
Grey, Brownish, Blue, Colorless, White, gray, Reddish
Red, gray
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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Insoluble in acids
2.3 Durability
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2.4 Specific Gravity
2.54-2.614.20-4.30
1
7.18
2.5 Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
Uneven, ConchoidalArthur Thomas, Gemstones (2009)
2.6 Cleavage
{001} Perfect, {010} Good
{110} good, 100 moderate, parting on {092} and {011}
2.7 Mohs Hardness
2.8 Chemical Composition
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
3 Optical Properties
3.1 Luster
3.2 Pleochroism
WeakMichael OâDonoghue
Weak to distinct brownish red-green-yellow
3.3 Dispersion
3.4 Transparency
Transparent
Transparent, Translucent
3.5 Refractive Index
1.518-1.5362.609-2.903
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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