1 Astrology
1.1 Origin
Southern and central Africa, violet, blue, violet, blue
USA
1.2 Color
Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink
Colorless, White, Green, White, Green, Brown, Colorless, Green, White, White
1.3 Streak
1.4 For which Rashi?
Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius
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1.5 Planet
1.6 Element of Planets
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
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
2.2 Solubility
Not Available
Easily soluble in cold dilute HCl
2.3 Durability
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2.4 Specific Gravity
2.5 Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Brittle, Uneven, Brittle, Uneven
2.6 Cleavage
Distinct on {100}, poor on {110}; parting on {001}
Good in two directions parallel to the prism faces {110}
2.7 Mohs Hardness
2.8 Chemical Composition
AlAl6O3BSi3O18
CaZn(AsO4)(OH)
3 Optical Properties
3.1 Luster
Vitreous
Subadamantine, Silky, Fibrous
3.2 Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
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3.3 Dispersion
3.4 Transparency
Translucent, Translucent to opaque
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3.5 Refractive Index
3.6 Optic Character
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3.7 Crystal System
Orthorhombic
Orthorhombic
3.8 Birefringence
3.9 Clarity
Translucent
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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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