1 Astrology
1.1 Origin
Not Available
Sri Lanka, India, Brazil
1.2 Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Green, Brown, Brown, Colorless, Green, gray, Yellow
1.3 Streak
Not Available
Brownish, White, Brownish, White
1.4 For which Rashi?
Not Available
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1.5 Planet
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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
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2.2 Solubility
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2.3 Durability
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2.4 Specific Gravity
Not Available3.55-3.73
1
7.18
2.5 Fracture
Not Available
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
2.6 Cleavage
2.7 Mohs Hardness
2.8 Chemical Composition
Not Available
Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
3 Optical Properties
3.1 Luster
Not Available
Greasy, Vitreous
3.2 Pleochroism
3.3 Dispersion
3.4 Transparency
Not Available
Gemmological Tables (2004) More from other references
3.5 Refractive Index
Not Available1.730-1.760
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
Not Available0.020
0
0.296
3.9 Clarity
Not Available
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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