1 Astrology
1.1 Origin
Kenya, Southern and central Africa
India, Italy
1.2 Color
Green, Brown, Yellow, Red
White, Reddish
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
Not Available
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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
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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
3.55-3.702.08-2.16
1
7.18
2.5 Fracture
Gemstones (2009)
Irregular/uneven, UnevenArthur Thomas, Gemstones (2009)
2.6 Cleavage
Not Available
distinct/good on {1011}
2.7 Mohs Hardness
2.8 Chemical Composition
Al 2SiO 5Arthur Thomas , Gemstones (2009) More from other references
CaAl 2Si 4O 12 -6H 2OArthur Thomas , Gemstones (2009)
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Blue stones strong trichroism: colorless/pale blue (greenish or violet)-blue dark blueHerve Nicolas Lazzarelli
NilArthur Thomas
3.3 Dispersion
3.4 Transparency
3.5 Refractive Index
1.710-1.7351.478-1.490
1
3.25
3.6 Optic Character
3.7 Crystal System
3.8 Birefringence
0.012-0.0330.005-0.008
0
0.296
3.9 Clarity
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
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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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