2 Astrology
2.1 Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Austria, Spain, Russia, Canada, Australia
2.4 Color
Blue, Green, Brownish, Greenish, Colorless, gray
Colorless, Brownish, Yellow, Green, gray, White
2.6 Streak
1.3 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
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1.8 Element of Planets
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1.11 Energy
Not Available
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1.14 How to Wear?
1.14.1 Finger
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1.15.2 Ring Metal
Not Available
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1.18 Deities
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1.21 Not to wear with
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1.24 Powers
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1.26 Birthstone
1.26.1 Planetary
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1.28.2 Talisman
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3 Physical Properties
3.2 Tenacity
3.3 Solubility
Not Available
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3.5 Durability
Not Available
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4.3 Specific Gravity
4.8 Fracture
Splintery
Conchoidal, Brittle
4.10 Cleavage
{010} perfect
{001} perfect; {111} imperfect, may exhibit parting on , {011}
4.12 Mohs Hardness
6.5 Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
7 Optical Properties
7.1 Luster
Vitreous, Subadamantine, Silky
Vitreous
7.2 Pleochroism
Colourless to pale brown to yellow
Not Available
7.3 Dispersion
7.8 Transparency
Transparent, Translucent
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
7.9 Refractive Index
1.653-1.6851.735-1.738
1
3.25
7.16 Optic Character
Not Available
Not Available
7.17 Crystal System
7.18 Birefringence
0.020-0.022Not Available
0
0.296
9.8 Clarity
Transparent
TransparentWalter Schumann
10 Benefits
10.1 Physical
10.1.1 Neurological
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10.1.2 Cardiovascular
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10.1.3 Respiratory
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10.1.4 Reproductive
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10.1.5 Digestive
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10.2 Psychology
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10.3 Healing
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10.4 Qualities Associated
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