1 Astrology
1.1 Origin
Southern and central Africa
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
1.2 Color
Red, Yellow, orange
Blue, Violet, Greenish, Brown, Colorless, Colorless, Blue, Violet, Yellow, 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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2.3 Durability
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2.4 Specific Gravity
2.5 Fracture
(e.g. graphite).
Subconchoidal, Conchoidal, Brittle
2.6 Cleavage
{010} Good
Fair on {100}, poor on {001} and {010}
2.7 Mohs Hardness
2.8 Chemical Composition
AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Mg2Al4Si5O18
3 Optical Properties
3.1 Luster
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Greasy, Vitreous
3.2 Pleochroism
Nearly colorless to pale golden yellowAnthony et al
X = pale yellow
3.3 Dispersion
3.4 Transparency
3.5 Refractive Index
2.538-2.704Not Available
1
3.25
3.6 Optic Character
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3.7 Crystal System
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Orthorhombic
3.8 Birefringence
0.166Not Available
0
0.296
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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