Origin
Sri Lanka
Australia, Brazil, Canada, Colombia, Madagascar, Zimbabwe
Color
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Green, gray
Brown
Streak
White, Brownish
Brownish, Red, Black
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
insoluble
-
Durability
-
-
Specific Gravity
6.86-7.035.2
1
7.18
👆🏻
Fracture
Subconchoidal, Uneven, Conchoidal, Irregular
Subconchoidal, Conchoidal
Cleavage
{100} imperfect, {110} indistinct; partings on {111} or {011}
Good in one direction
Mohs Hardness
6-76-6.5
2
10
👆🏻
Chemical Composition
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Luster
Adamantine, Greasy
Resinous
Pleochroism
Pleochroic haloes have been observed. Dichroic in yellow
-
Dispersion
0.070.03
0.005
1
👆🏻
Transparency
Transparent, Translucent
TransparentWalter Schumann
Refractive Index
1.990-2.1052.190-2.457
1
3.25
👆🏻
Optic Character
-
-
Crystal System
tetragonal
Orthorhombic
Birefringence
0.096-0.0980.083
0
0.296
👆🏻
Clarity
Transparent
TransparentWalter Schumann
Physical
Neurological
Enhances mental clarity and focus
-
Cardiovascular
Supports heart health
-
Respiratory
Poor
-
Reproductive
-
-
Digestive
-
-
Psychology
Focus
Strength
Healing
Emotional healing
Emotional healing
Qualities Associated
Manifestation
Balance