1 Astrology
1.1 Origin
Brazil
Southern and central Africa
1.2 Color
White, Blue, Yellow, Brown, Green, Brownish, Greenish, gray
Brown, Red, Green, Blue, Violet
1.3 Streak
1.4 For which Rashi?
Not Available
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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
2.65-2.901.25-1.35
1
7.18
2.5 Fracture
Gemstones (2009), Flexible Flexible fragments.
Not Available
2.6 Cleavage
{001} Perfect
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2.7 Mohs Hardness
Not AvailableNot Available
2
10
2.8 Chemical Composition
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
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3 Optical Properties
3.1 Luster
3.2 Pleochroism
NilArthur Thomas
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3.3 Dispersion
3.4 Transparency
Translucent
Gemmological Tables (2004)
3.5 Refractive Index
1.534-1.6011.540-1.560
1
3.25
3.6 Optic Character
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3.7 Crystal System
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3.8 Birefringence
0.050Not Available
0
0.296
3.9 Clarity
Translucent
OpaqueUlrich Henn and Claudio C. Milisenda
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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