2 Astrology
2.2 Origin
Sri Lanka, Southern and central Africa
Italy, Russia
2.4 Color
Blue
Colorless, Green, Black, Brown, Red, Greenish, Yellow, gray
2.5 Streak
2.7 For which Rashi?
Not Available
Not Available
2.9 Planet
Not Available
Not Available
2.10 Element of Planets
Not Available
Not Available
2.12 How to Wear?
2.12.1 Finger
Not Available
Not Available
2.13.1 Ring Metal
Not Available
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2.15 Energy
Not Available
Not Available
2.16 Deities
Not Available
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2.18 Not to wear with
Not Available
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2.20 Powers
Not Available
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2.22 Birthstone
2.22.1 Planetary
Not Available
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2.24.2 Talisman
Not Available
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3 Physical Properties
3.1 Tenacity
4.2 Solubility
Not Available
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4.4 Durability
Not Available
Not Available
4.6 Specific Gravity
3.95-4.103.70-4.10
1
7.18
4.9 Fracture
Not Available
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
4.12 Cleavage
4.13 Mohs Hardness
5.2 Chemical Composition
Al 2O 3Ulrich Henn and Claudio C.
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
6 Optical Properties
6.1 Luster
Not Available
Adamantine, Resinous
6.3 Pleochroism
Not Available
Not Available
6.4 Dispersion
6.7 Transparency
Transparent, Translucent
Transparent
6.8 Refractive Index
1.757-1.7801.88-1.94
1
3.25
6.12 Optic Character
Not Available
Not Available
6.13 Crystal System
6.14 Birefringence
7.2 Clarity
8 Benefits
8.1 Physical
8.2.1 Neurological
Not Available
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8.3.1 Cardiovascular
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8.3.2 Respiratory
Not Available
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8.3.3 Reproductive
Not Available
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8.3.4 Digestive
Not Available
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8.4 Psychology
Not Available
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8.5 Healing
Not Available
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8.6 Qualities Associated
Not Available
Not Available