Origin
Southern and central Africa
India, Southern and central Africa, Madagascar
Color
Black
Black, Brownish, Greenish
Streak
-
Brown
For which Rashi?
-
-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.33-2.503.18-3.22
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Conchoidal
Cleavage
None
{1011} Indistinct
Mohs Hardness
5-5.5-9999
2
10
👆🏻
Chemical Composition
SiO2
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Luster
-
Vitreous
Pleochroism
-
Very strong: yellow-brown pale yellow
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.450-1.5501.635-1.672
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
-
Birefringence
-99990.025
0
0.296
👆🏻
Clarity
Transparent
Transparent
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Protection
Protection
Healing
Emotional healing
Emotional healing
Qualities Associated
Balance
Protection & Grounding