Origin
India, Southern and central Africa, Madagascar
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Color
Black, Brownish, Greenish
Blue, White, Grey, Yellow, Green, Colorless, Red, gray
Streak
Brown
Blue, White
For which Rashi?
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-
Planet
-
-
Element of Planets
-
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Energy
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How to Wear?
Finger
-
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Ring Metal
-
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Deities
-
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Not to wear with
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Powers
-
-
Birthstone
Planetary
-
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Talisman
-
-
Tenacity
-
Brittle
Solubility
-
Gelatinises in acids
Durability
-
-
Specific Gravity
3.18-3.222.4-2.5
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Uneven, Conchoidal
Cleavage
{1011} Indistinct
Distinct on {110}
Mohs Hardness
-99995-6
2
10
👆🏻
Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2
Luster
Vitreous
Vitreous, Greasy
Pleochroism
Very strong: yellow-brown pale yellow
None
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
Transparent, Translucent
-
Refractive Index
1.635-1.6721.50
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
Isometric
Birefringence
0.025-9999
0
0.296
👆🏻
Clarity
Transparent
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Physical
Neurological
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Enhances mental clarity and focus
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
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Digestive
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Psychology
Protection
Communication
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection & Grounding
Communication