1 Astrology
1.1 Origin
Southern and central Africa, violet, blue, violet, blue
Not Available
1.2 Color
Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink
Blue, gray, Black, Blue
1.3 Streak
1.4 For which Rashi?
Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius
Not Available
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
Not Available
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1.8 Energy
1.9 Deities
1.10 Not to wear with
Not Available
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1.11 Powers
1.12 Birthstone
1.12.1 Planetary
Not Available
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1.12.2 Talisman
Not Available
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2 Physical Properties
2.1 Tenacity
Not Available
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2.2 Solubility
Not Available
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2.3 Durability
Not Available
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2.4 Specific Gravity
2.5 Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Conchoidal, Brittle, Conchoidal
2.6 Cleavage
Distinct on {100}, poor on {110}; parting on {001}
Good on [110] and on [001]
2.7 Mohs Hardness
2.8 Chemical Composition
AlAl6O3BSi3O18
[ ]Na2(Mg3Al2)Si8O22(OH)2
3 Optical Properties
3.1 Luster
Vitreous
Vitreous, Pearly
3.2 Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
Strong
3.3 Dispersion
3.4 Transparency
Translucent, Translucent to opaque
Not Available
3.5 Refractive Index
1.669-1.7231.606-1.637
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
3.8 Birefringence
0.011-0.037Not Available
0
0.296
3.9 Clarity
Translucent
Not Available
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
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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
Not Available
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4.2 Psychology
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4.3 Healing
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4.4 Qualities Associated
Not Available
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