1 Astrology
1.1 Origin
Pakistan, Tanzania
Southern and central Africa
1.2 Color
Brown, gray, Green, Blue, rose, Red
Brown, Red, Green, Blue, Violet
1.3 Streak
White, Colorless
Not Available
1.4 For which Rashi?
Not Available
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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
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2.2 Solubility
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2.3 Durability
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2.4 Specific Gravity
3.20-3.501.25-1.35
1
7.18
2.5 Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Even
Not Available
2.6 Cleavage
Perfect {010} imperfect {100}
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2.7 Mohs Hardness
2.8 Chemical Composition
Ca2Al3(SiO4)3(OH)
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3 Optical Properties
3.1 Luster
3.2 Pleochroism
X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green
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3.3 Dispersion
3.4 Transparency
Transparent, Translucent, Opaque . May be translucent in thin backlit sections.
Gemmological Tables (2004)
3.5 Refractive Index
1.685-1.7071.540-1.560
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
Orthorhombic
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3.8 Birefringence
0.006-0.018Not Available
0
0.296
3.9 Clarity
Transparent
OpaqueUlrich Henn and Claudio C. Milisenda
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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