1 Astrology
1.1 Origin
Southern and central Africa, violet, blue, violet, blue
USA, Mexico
1.2 Color
Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink
Green, Brown, Greenish, Brown, Green, Green, Black
1.3 Streak
White
Greenish, gray, Greenish, gray
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
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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
3.26-3.413.19-3.56
1
7.18
2.5 Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
2.6 Cleavage
Distinct on {100}, poor on {110}; parting on {001}
{110} Perfect, {010} Indistinct
2.7 Mohs Hardness
2.8 Chemical Composition
AlAl6O3BSi3O18
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
3 Optical Properties
3.1 Luster
Vitreous
Vitreous, Resinous
3.2 Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
Pale green
3.3 Dispersion
3.4 Transparency
Translucent, Translucent to opaque
Transparent, Translucent
3.5 Refractive Index
1.669-1.7231.671-1.774
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
Orthorhombic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c
3.8 Birefringence
0.011-0.037Not Available
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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