1 Astrology
1.1 Origin
Not Available
Madagascar, Southern and central Africa
1.2 Color
Black, Blue, Yellow, Green
Grey, Brownish, Blue, Colorless, White, gray, Reddish
1.3 Streak
Grey, Greenish, Brown
White
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
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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
Not Available
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2 Physical Properties
2.1 Tenacity
2.2 Solubility
Not Available
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2.3 Durability
Not Available
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2.4 Specific Gravity
3.28-3.442.54-2.61
1
7.18
2.5 Fracture
Uneven, Splintery, Brittle
Uneven, Uneven, Gems, Sixth Edition (2006)
2.6 Cleavage
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
{001} Perfect, {010} Good
2.7 Mohs Hardness
2.8 Chemical Composition
Not Available
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
3 Optical Properties
3.1 Luster
Vitreous, Silky
Not Available
3.2 Pleochroism
X = blue
WeakMichael OâDonoghue
3.3 Dispersion
3.4 Transparency
Not Available
Transparent
3.5 Refractive Index
1.680-1.6981.518-1.536
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
3.8 Birefringence
0.005-0.0080.005-0.008
0
0.296
3.9 Clarity
Not Available
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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