1 Astrology
1.1 Origin
Southern and central Africa
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
1.2 Color
Greenish, Blue, Colorless, Green, Yellow
Blue, Green, Brownish, Greenish, Colorless, gray
1.3 Streak
1.4 For which Rashi?
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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
2.2 Solubility
2.3 Durability
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2.4 Specific Gravity
3.17-3.243.20-3.26
1
7.18
2.5 Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Splintery
2.6 Cleavage
(0001) indistinct
{010} perfect
2.7 Mohs Hardness
2.8 Chemical Composition
SiCArthur Thomas , Gemstones (2009)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
3 Optical Properties
3.1 Luster
Adamantine
Vitreous, Subadamantine, Silky
3.2 Pleochroism
NilArthur Thomas
Colourless to pale brown to yellow
3.3 Dispersion
3.4 Transparency
Gemmological Tables (2004) More from other references
Transparent, Translucent
3.5 Refractive Index
2.648-2.6911.653-1.685
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
3.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
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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