1 Astrology
1.1 Origin
Southern and central Africa, violet, blue, violet, blue
Russia, green, violet, Yellow, blue, green, violet, Yellow, blue
1.2 Color
Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink
Black, Violet, Blue, Green
1.3 Streak
1.4 For which Rashi?
Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius
Gemini, Virgo, Gemini, Virgo, Gemini, Virgo
1.5 Planet
1.6 Element of Planets
1.7 How to Wear?
1.7.1 Finger
Not Available
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1.7.2 Ring Metal
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1.8 Energy
1.9 Deities
1.10 Not to wear with
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1.11 Powers
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
3.26-3.413.22-3.40
1
7.18
2.5 Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
2.6 Cleavage
Distinct on {100}, poor on {110}; parting on {001}
1,2 prismatic.
2.7 Mohs Hardness
2.8 Chemical Composition
AlAl6O3BSi3O18
(Ca,Cr)MgSi 2O 6Gemdat.org , Management Team (2012)
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
Common trichroism: light green
3.3 Dispersion
3.4 Transparency
Translucent, Translucent to opaque
Gems, Sixth Edition (2006)
3.5 Refractive Index
1.669-1.7231.668-1.703
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
0.011-0.0370.024-0.030
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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