1 Astrology
1.1 Origin
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
USA
1.2 Color
Blue, Violet, Greenish, Brown, Colorless, Colorless, Blue, Violet, Yellow, gray
Black, Violet, pink, Reddish, Brown, orange
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
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2.3 Durability
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2.4 Specific Gravity
2.57-2.664.06-4.08
1
7.18
2.5 Fracture
Subconchoidal, Conchoidal, Brittle
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
2.6 Cleavage
Fair on {100}, poor on {001} and {010}
{???} Perfect
2.7 Mohs Hardness
2.8 Chemical Composition
Mg2Al4Si5O18
Mn2+ Zn 2SiO 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
3 Optical Properties
3.1 Luster
Greasy, Vitreous
Vitreous
3.2 Pleochroism
X = pale yellow
Lavender and pale purple for transparent pink stones.Michael OâDonoghue
3.3 Dispersion
3.4 Transparency
3.5 Refractive Index
Not Available1.720-1.746
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
Not Available0.026
0
0.296
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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