1 Astrology
1.1 Origin
India
Canada, Madagascar, Southern and central Africa, Sri Lanka, USA
1.2 Color
Colorless, White, gray, Brownish, Greenish
Violet, Blue
1.3 Streak
1.4 For which Rashi?
Not Available
Not Available
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
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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
2.78-2.882.56-2.66
1
7.18
2.5 Fracture
Micaceous, Brittle
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
2.6 Cleavage
Perfect on the {001}
Not Available
2.7 Mohs Hardness
2.8 Chemical Composition
KAl 2AlSi 3O 10(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
3 Optical Properties
3.1 Luster
Vitreous, Silky, Pearly
Vitreous
3.2 Pleochroism
Weak
Strong trichroism: colorless to yellowish
3.3 Dispersion
3.4 Transparency
3.5 Refractive Index
1.552-1.6181.542-1.578
1
3.25
3.6 Optic Character
3.7 Crystal System
3.8 Birefringence
Not Available0.008-0.012
0
0.296
3.9 Clarity
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
Not Available
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