1 Astrology
1.1 Origin
Brazil
Canada, Madagascar, Southern and central Africa, Sri Lanka, USA
1.2 Color
White, Blue, Yellow, Brown, Green, Brownish, Greenish, gray
Violet, Blue
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
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2.2 Solubility
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2.3 Durability
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2.4 Specific Gravity
2.65-2.902.56-2.66
1
7.18
2.5 Fracture
Gemstones (2009), Flexible Flexible fragments.
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
2.6 Cleavage
{001} Perfect
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2.7 Mohs Hardness
2.8 Chemical Composition
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
3 Optical Properties
3.1 Luster
3.2 Pleochroism
NilArthur Thomas
Strong trichroism: colorless to yellowish
3.3 Dispersion
3.4 Transparency
3.5 Refractive Index
1.534-1.6011.542-1.578
1
3.25
3.6 Optic Character
3.7 Crystal System
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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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