1 Astrology
1.1 Origin
Let us know how we can update this page, (Click for more details), Not Available, Southern and central Africa
Tanzania, Madagascar, Kenya, Sri Lanka, Burma, Australia
1.2 Color
Red
Green, Brown, Colorless, Greenish, Yellow
1.3 Streak
1.4 For which Rashi?
1.5 Planet
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
Not Available
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1.8 Energy
1.9 Deities
Black Madonna, Isis
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1.10 Not to wear with
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1.11 Powers
Courage, Wealth
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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
2.63-2.653.25-3.45
1
7.18
2.5 Fracture
Not Available
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven
2.6 Cleavage
Indiscernible
Good on {110}
2.7 Mohs Hardness
2.8 Chemical Composition
SiO2
Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Not Available
X = colorless to green; Y = colorless
3.3 Dispersion
3.4 Transparency
Opaque
Gemmological Tables (2004) More from other references
3.5 Refractive Index
1.54-1.551.660-1.685
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
Not Available0.012-0.017
0
0.296
3.9 Clarity
Opaque
TransparentUlrich 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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