Origin
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Southern and central Africa
Color
Blue, gray, Black
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Streak
Blue
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For which Rashi?
-
-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
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Ring Metal
-
-
Deities
-
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Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
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Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3-3.152.50-2.80
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
Good on [110] and on [001]
Perfect
Mohs Hardness
6.0-6.55-6.5
2
10
👆🏻
Chemical Composition
[ ]Na2(Mg3Al2)Si8O22(OH)2
Na 4(Al,Si) 12O 24Cl to Ca 4(Si,Al) 12O 24(CO 3,SO 4)Arthur Thomas , Gemstones (2009)
Luster
Vitreous, Pearly
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Pleochroism
Strong
-
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
-
Transparent
Refractive Index
1.606-1.6371.531-1.600
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
-
Birefringence
-99990.004-0.037
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
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Cardiovascular
-
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Respiratory
Good
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Reproductive
-
-
Digestive
-
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Psychology
Communication
Creativity
Healing
Emotional healing
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Qualities Associated
Peace
Creativity