Origin
Canada, Russia
Australia, Brazil, Canada, Colombia, Madagascar, Zimbabwe
Color
Black, Green, gray
Brown
Streak
gray, Green
Brownish, Red, Black
For which Rashi?
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-
Planet
-
-
Element of Planets
-
-
Energy
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-
How to Wear?
Finger
-
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Ring Metal
-
-
Deities
-
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Not to wear with
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-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
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-
Tenacity
Brittle
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Solubility
-
-
Durability
-
-
Specific Gravity
3.3-3.55.2
1
7.18
👆🏻
Fracture
Uneven
Subconchoidal, Conchoidal
Cleavage
Perfect on [110]
Good in one direction
Mohs Hardness
5-66-6.5
2
10
👆🏻
Chemical Composition
NaNa2(Fe++4Fe+++)Si8O22(OH)2
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Luster
Vitreous
Resinous
Pleochroism
Strong: Blue-greens
-
Dispersion
0.020.03
0.005
1
👆🏻
Transparency
-
TransparentWalter Schumann
Refractive Index
1.652-1.6992.190-2.457
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
Orthorhombic
Birefringence
-99990.083
0
0.296
👆🏻
Clarity
-
TransparentWalter Schumann
Physical
Neurological
Promotes psychic abilities and spiritual growth
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Cardiovascular
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-
Respiratory
Excellent
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Reproductive
-
-
Digestive
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Psychology
Insight
Strength
Healing
Emotional healing
Emotional healing
Qualities Associated
Manifestation
Balance