Origin
Australia, Brazil, Canada, Colombia, Madagascar, Zimbabwe
Switzerland
Color
Brown
Brown, Brownish, Yellow, Black, Reddish
Streak
Brownish, Red, Black
White, gray
For which Rashi?
-
-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
5.23.7-3.8
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Subconchoidal, Conchoidal
Cleavage
Good in one direction
Distinct on {010}
Mohs Hardness
6-6.57-7.5
2
10
👆🏻
Chemical Composition
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Luster
Resinous
Resinous
Pleochroism
-
X = colorless; Y = pale yellow; Z = golden yellow
Dispersion
0.030.02
0.005
1
👆🏻
Transparency
TransparentWalter Schumann
-
Refractive Index
2.190-2.4571.736-1.762
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
monoclinic
Birefringence
0.0830.009-0.015
0
0.296
👆🏻
Clarity
TransparentWalter Schumann
-
Physical
Neurological
-
Enhances mental clarity and focus
Cardiovascular
-
-
Respiratory
-
Good
Reproductive
-
-
Digestive
-
-
Psychology
Strength
Protection
Healing
Emotional healing
Physical healing
Qualities Associated
Balance
Protection