Origin
Australia, Brazil, Canada, Colombia, Madagascar, Zimbabwe
Australia, Austria, Czech, Italy
Color
Brown
Green, Brownish
Streak
Brownish, Red, Black
Greenish, White
For which Rashi?
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-
Planet
-
-
Element of Planets
-
-
Energy
-
-
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
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.23.18-3.24
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
-
Cleavage
Good in one direction
perfect on {001}
Mohs Hardness
6-6.52
2
10
👆🏻
Chemical Composition
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Ni3(Si2O5)(OH)4
Luster
Resinous
Waxy, Pearly
Pleochroism
-
Weak
Dispersion
0.030.03
0.005
1
👆🏻
Transparency
TransparentWalter Schumann
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Refractive Index
2.190-2.4571.600-1.630
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
Orthorhombic
Birefringence
0.083-9999
0
0.296
👆🏻
Clarity
TransparentWalter Schumann
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Physical
Neurological
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Cardiovascular
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Respiratory
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Good
Reproductive
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-
Digestive
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Psychology
Strength
-
Healing
Emotional healing
Emotional healing
Qualities Associated
Balance
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