1 Astrology
1.1 Origin
Southern and central Africa
Tanzania, Sri Lanka, China
1.2 Color
Red, Brown, Red, Red, Black
Colorless
1.3 Streak
Brownish, Red, Brownish, Red
White
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
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1.6 Element of Planets
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1.7 How to Wear?
1.7.1 Finger
Not Available
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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
2.2 Solubility
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2.3 Durability
Not Available
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2.4 Specific Gravity
5.85-6.153.60-3.61
1
7.18
2.5 Fracture
Conchoidal, Metallic, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Conchoidal
2.6 Cleavage
Fair in four directions forming octahedrons
Imperfect/fair/absent
2.7 Mohs Hardness
2.8 Chemical Composition
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references
3 Optical Properties
3.1 Luster
3.2 Pleochroism
3.3 Dispersion
3.4 Transparency
TranslucentWalter Schumann
Gemmological Tables (2004) More from other references
3.5 Refractive Index
3.6 Optic Character
Not Available
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3.7 Crystal System
3.8 Birefringence
Not Available0.055
0
0.296
3.9 Clarity
TranslucentWalter Schumann
Color grading system
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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