1 Astrology
1.1 Origin
Southern and central Africa
Canada, Madagascar, Southern and central Africa, Sri Lanka, USA
1.2 Color
Yellow, Blue, Colorless, Yellow, White
Violet, Blue
1.3 Streak
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
Not Available
1.6 Element of Planets
Not Available
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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
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1.9 Deities
Not Available
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1.10 Not to wear with
Not Available
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1.11 Powers
Not Available
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1.12 Birthstone
1.12.1 Planetary
Not Available
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1.12.2 Talisman
Not Available
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2 Physical Properties
2.1 Tenacity
Not Available
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2.2 Solubility
Not Available
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2.3 Durability
Not Available
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2.4 Specific Gravity
3.28-3.312.56-2.66
1
7.18
2.5 Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
2.6 Cleavage
None observed
Not Available
2.7 Mohs Hardness
2.8 Chemical Composition
Al 6B 5O 15(F,OH) 3Ulrich Henn and Claudio C.
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Colorless
Strong trichroism: colorless to yellowish
3.3 Dispersion
3.4 Transparency
Gemmological Tables (2004) More from other references
Transparent
3.5 Refractive Index
1.638-1.6501.542-1.578
1
3.25
3.6 Optic Character
3.7 Crystal System
3.8 Birefringence
0.01300.008-0.012
0
0.296
3.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
Not Available
4.1.2 Cardiovascular
Not Available
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4.1.3 Respiratory
Not Available
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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
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