1 Astrology
1.1 Origin
Not Available
Afghanistan
1.2 Color
Black, Blue, Yellow, Green
White, Colorless, Blue, Red, Green, Yellow, Violet, pink
1.3 Streak
Grey, Greenish, Brown
White
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
Not Available
1.6 Element of Planets
Not Available
Not Available
1.7 How to Wear?
1.7.1 Finger
Not Available
Not Available
1.7.2 Ring Metal
Not Available
Not Available
1.8 Energy
Not Available
Not Available
1.9 Deities
Not Available
Not Available
1.10 Not to wear with
Not Available
Not Available
1.11 Powers
Not Available
Not Available
1.12 Birthstone
1.12.1 Planetary
Not Available
Not Available
1.12.2 Talisman
Not Available
Not Available
2 Physical Properties
2.1 Tenacity
2.2 Solubility
Not Available
Not Available
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
3.28-3.442.90-3.14
1
7.18
2.5 Fracture
Uneven, Splintery, Brittle
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
2.6 Cleavage
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
Imperfect; basal
2.7 Mohs Hardness
2.8 Chemical Composition
Not Available
(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.
3 Optical Properties
3.1 Luster
3.2 Pleochroism
X = blue
Moderate dichroic
3.3 Dispersion
3.4 Transparency
Not Available
Transparent
3.5 Refractive Index
1.680-1.6981.598-1.620
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
0.005-0.0080.008-0.011
0
0.296
3.9 Clarity
Not Available
Transparent
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
Not Available
4.1.2 Cardiovascular
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4.1.3 Respiratory
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4.1.4 Reproductive
Not Available
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4.1.5 Digestive
Not Available
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4.2 Psychology
Not Available
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4.3 Healing
Not Available
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4.4 Qualities Associated
Not Available
Not Available