1 Astrology
1.1 Origin
India, Italy
Not Available
1.2 Color
White, Reddish
Colorless, White, Brownish, Reddish, Black, Brownish, Black, Colorless, gray, White, Reddish, Brown
1.3 Streak
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
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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
2.3 Durability
Not Available
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2.4 Specific Gravity
2.5 Fracture
Irregular/uneven, UnevenArthur Thomas, Gemstones (2009)
Uneven
2.6 Cleavage
distinct/good on {1011}
None observed
2.7 Mohs Hardness
2.8 Chemical Composition
CaAl 2Si 4O 12 -6H 2OArthur Thomas , Gemstones (2009)
Na 3AlF 6Ulrich Henn and Claudio C.
3 Optical Properties
3.1 Luster
Vitreous
Vitreous, Greasy, Pearly
3.2 Pleochroism
NilArthur Thomas
colorless.
3.3 Dispersion
3.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
3.5 Refractive Index
1.478-1.4901.338-1.339
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
3.8 Birefringence
3.9 Clarity
Transparent
TransparentUlrich 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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