1 Astrology
1.1 Origin
Southern and central Africa
Madagascar
1.2 Color
Red, Yellow, Brownish, White, Reddish, Greenish, orange
Brownish, Black, Reddish, Brown, Blue
1.3 Streak
Grey, Yellow, gray
Reddish, Brown
1.4 For which Rashi?
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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
2.2 Solubility
2.3 Durability
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2.4 Specific Gravity
2.5 Fracture
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
2.6 Cleavage
Poor to good on (001)
{0001} good, {10 1 0} parting
2.7 Mohs Hardness
2.8 Chemical Composition
(Mg,Fe) 5(SiO 4) 2(F,OH) 2Ulrich Henn and Claudio C.
(Ca,Ce)(Al,Ti,Mg)12O19
3 Optical Properties
3.1 Luster
Vitreous, Greasy
Vitreous
3.2 Pleochroism
X golden yellow to orange
O = brownish gray; E = gray
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Handbook of mineralogy (2001)
3.5 Refractive Index
1.589-1.6701.79-1.807
1
3.25
3.6 Optic Character
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3.7 Crystal System
3.8 Birefringence
0.027-0.032Not Available
0
0.296
3.9 Clarity
Transparent
Handbook of mineralogy (2001)
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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