1 Astrology
1.1 Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Brazil, Southern and central Africa, Sri Lanka
1.2 Color
Blue, Green, Brownish, Greenish, Colorless, gray
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
2.2 Solubility
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Insoluble in acids
2.3 Durability
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2.4 Specific Gravity
3.20-3.264.20-4.30
1
7.18
2.5 Fracture
Splintery
Uneven, ConchoidalArthur Thomas, Gemstones (2009)
2.6 Cleavage
{010} perfect
{110} good, 100 moderate, parting on {092} and {011}
2.7 Mohs Hardness
2.8 Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
3 Optical Properties
3.1 Luster
Vitreous, Subadamantine, Silky
Adamantine
3.2 Pleochroism
Colourless to pale brown to yellow
Weak to distinct brownish red-green-yellow
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Transparent, Translucent
3.5 Refractive Index
1.653-1.6852.609-2.903
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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