1 Astrology
1.1 Origin
Southern and central Africa
Southern and central Africa
1.2 Color
Colorless, Greenish, Colorless, Green, gray, Yellow
Colorless, Green, Yellow, White, Colorless, Green, Yellow, White
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
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1.7 How to Wear?
1.7.1 Finger
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1.7.2 Ring Metal
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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
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2.3 Durability
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2.4 Specific Gravity
3.21-3.383.23-3.26
1
7.18
2.5 Fracture
Irregular/uneven, Uneven
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
2.6 Cleavage
Perfect on {001}
Perfect on {010} imperfect on {100}
2.7 Mohs Hardness
2.8 Chemical Composition
Ca 2Al 3(SiO 4) 3(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
3 Optical Properties
3.1 Luster
3.2 Pleochroism
StrongArthur Thomas
colorless.
3.3 Dispersion
3.4 Transparency
3.5 Refractive Index
1.670-1.7341.635-1.671
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
3.8 Birefringence
0.006-0.0110.033-0.042
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
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