Origin
India, Southern and central Africa, Madagascar
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Color
Black, Brownish, Greenish
Colorless, Yellow, Brown, Green, Red, Reddish
Streak
Brown
White, Yellow, Colorless
For which Rashi?
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Planet
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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
-
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Birthstone
Planetary
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Talisman
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Tenacity
-
Brittle
Solubility
-
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Durability
-
-
Specific Gravity
3.18-3.223.0-3.1
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
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Cleavage
{1011} Indistinct
Perfect on {001}
Mohs Hardness
-99993.5
2
10
👆🏻
Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Ca(Mg,Al)3(Al3Si)O10(OH)2
Luster
Vitreous
Vitreous, Pearly
Pleochroism
Very strong: yellow-brown pale yellow
X = colorless
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Transparent, Translucent
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Refractive Index
1.635-1.6721.643-1.648
1
3.25
👆🏻
Optic Character
-
-
Crystal System
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monoclinic
Birefringence
0.0250.012-0.015
0
0.296
👆🏻
Clarity
Transparent
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Physical
Neurological
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Cardiovascular
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Respiratory
Good
Poor
Reproductive
-
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Digestive
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Psychology
Protection
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Healing
Emotional healing
Emotional healing
Qualities Associated
Protection & Grounding
Creativity