Origin
India, Southern and central Africa, Madagascar
Australia
Color
Black, Brownish, Greenish
Red, White, gray, Black
Streak
Brown
Brownish, Black
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
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Brittle
Solubility
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Durability
-
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Specific Gravity
3.18-3.22-9999
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Conchoidal, Uneven
Cleavage
{1011} Indistinct
{1010} Imperfect, {0001} Imperfect
Mohs Hardness
-99995-5.5
2
10
👆🏻
Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
NiAs
Luster
Vitreous
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Pleochroism
Very strong: yellow-brown pale yellow
Strong (reflected light)
Dispersion
0.020.04
0.005
1
👆🏻
Transparency
Transparent, Translucent
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Refractive Index
1.635-1.672-9999
1
3.25
👆🏻
Optic Character
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Crystal System
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Hexagonal
Birefringence
0.025-9999
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
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Qualities Associated
Protection & Grounding
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