1 Astrology
1.1 Origin
Australia, Southern and central Africa
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
1.2 Color
Violet, pink
Blue, Green, Brownish, Greenish, Colorless, gray
1.3 Streak
White, Violet, Blue
White
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
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2.3 Durability
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2.4 Specific Gravity
2.11-2.203.20-3.26
1
7.18
2.5 Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven
Splintery
2.6 Cleavage
Perfect on {0001}
{010} perfect
2.7 Mohs Hardness
2.8 Chemical Composition
Mg 6Cr 2(CO 3)(OH) 16 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
3 Optical Properties
3.1 Luster
Waxy, Resinous
Vitreous, Subadamantine, Silky
3.2 Pleochroism
Weak
Colourless to pale brown to yellow
3.3 Dispersion
3.4 Transparency
Translucent
Transparent, Translucent
3.5 Refractive Index
1.516-1.5441.653-1.685
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
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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