Origin
Australia, Brazil, Canada, Colombia, Madagascar, Zimbabwe
Southern and central Africa, Zimbabwe, South Africa
Color
Brown
Green, Blue
Streak
Brownish, Red, Black
Greenish, White
For which Rashi?
-
Virgo
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
Gaia
Not to wear with
-
-
Powers
-
Healing
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
Decomposed by acids
Durability
-
-
Specific Gravity
5.22.96
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
-
Cleavage
Good in one direction
Perfect on {010}
Mohs Hardness
6-6.55
2
10
👆🏻
Chemical Composition
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)
Luster
Resinous
Vitreous
Pleochroism
-
X: very light bluish green; Y and Z: brilliant bluish green
Dispersion
0.030.04
0.005
1
👆🏻
Transparency
TransparentWalter Schumann
-
Refractive Index
2.190-2.4571.550
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
Triclinic
Birefringence
0.0830.091
0
0.296
👆🏻
Clarity
TransparentWalter Schumann
-
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
-
Good
Reproductive
-
-
Digestive
-
-
Psychology
Strength
Peace
Healing
Emotional healing
Emotional healing
Qualities Associated
Balance
Harmony