1 Astrology
1.1 Origin
Brazil
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
1.2 Color
Green, Colorless, Greenish, Yellow, Green
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
2.98-2.992.57-2.66
1
7.18
2.5 Fracture
Conchoidal, Gems
Subconchoidal, Conchoidal, Brittle
2.6 Cleavage
(010) Distinct to good
Fair on {100}, poor on {001} and {010}
2.7 Mohs Hardness
2.8 Chemical Composition
NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg2Al4Si5O18
3 Optical Properties
3.1 Luster
Vitreous
Greasy, Vitreous
3.2 Pleochroism
Very weakWalter Schumann
X = pale yellow
3.3 Dispersion
3.4 Transparency
Gemmological Tables (2004) More from other references
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3.5 Refractive Index
1.602-1.625Not Available
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
0.019-0.021Not Available
0
0.296
3.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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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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