1 Astrology
1.1 Origin
Not Available
Kenya, Southern and central Africa
1.2 Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Colorless, Greenish, Blue
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
Not Available3.40-3.58
1
7.18
2.5 Fracture
Not Available
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Uneven
2.6 Cleavage
Not Available
{010} Perfect
2.7 Mohs Hardness
2.8 Chemical Composition
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(Al,Mg) 8(Al,Si) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
3 Optical Properties
3.1 Luster
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3.2 Pleochroism
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3.3 Dispersion
3.4 Transparency
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Transparent
3.5 Refractive Index
Not Available1.701-1.724
1
3.25
3.6 Optic Character
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3.7 Crystal System
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3.8 Birefringence
Not Available0.005-0.007
0
0.296
3.9 Clarity
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Transparent
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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