1 Astrology
1.1 Origin
Afghanistan, Southern and central Africa
Madagascar
1.2 Color
Grey, White, Colorless, gray, Pale pink, Blue
Brownish, Black, Reddish, Brown, Blue
1.3 Streak
1.4 For which Rashi?
Not Available
Not Available
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
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
Readily soluble in HF
Not Available
2.3 Durability
Not Available
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2.4 Specific Gravity
2.5 Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
2.6 Cleavage
None observed
{0001} good, {10 1 0} parting
2.7 Mohs Hardness
2.8 Chemical Composition
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
(Ca,Ce)(Al,Ti,Mg)12O19
3 Optical Properties
3.1 Luster
Vitreous, Greasy
Vitreous
3.2 Pleochroism
Not Available
O = brownish gray; E = gray
3.3 Dispersion
3.4 Transparency
Transparent, Translucent
Handbook of mineralogy (2001)
3.5 Refractive Index
1.517-1.5251.79-1.807
1
3.25
3.6 Optic Character
Not Available
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3.7 Crystal System
3.8 Birefringence
Not AvailableNot 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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