1 Astrology
1.1 Origin
Southern and central Africa
Not Available
1.2 Color
Blue, Grey
Yellow, Brownish, Reddish, Green, Brownish, Yellow, Green, Yellow, Red
1.3 Streak
Not Available
White, Yellow
1.4 For which Rashi?
Not Available
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1.5 Planet
Not Available
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1.6 Element of Planets
Not Available
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1.7 How to Wear?
1.7.1 Finger
Not Available
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1.7.2 Ring Metal
Not Available
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1.8 Energy
Not Available
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1.9 Deities
Not Available
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1.10 Not to wear with
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1.11 Powers
Not Available
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1.12 Birthstone
1.12.1 Planetary
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1.12.2 Talisman
Not Available
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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
2.5 Fracture
Gemstones of the world (2001)
Uneven
2.6 Cleavage
2.7 Mohs Hardness
2.8 Chemical Composition
SiO 2Walter Schumann , Gemstones of the world (2001)
(Fe+++,Al)25(PO4)17O6(OH)12•75(H2O)
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Not Available
visible: O = Pale yellow E = Canary yellow to yellow orange
3.3 Dispersion
3.4 Transparency
Gemstones of the world (2001)
Not Available
3.5 Refractive Index
1.534-1.5401.575-1.585
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
3.8 Birefringence
Not AvailableNot Available
0
0.296
3.9 Clarity
Gemstones of the world (2001)
Not Available
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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