Origin
-
Southern and central Africa
Color
Brownish, Black
Violet, Black
Streak
Brown
gray, White
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
3.263.17
1
7.18
👆🏻
Fracture
Uneven
-
Cleavage
None
None
Mohs Hardness
-99997
2
10
👆🏻
Chemical Composition
NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
Luster
Resinous
Vitreous
Pleochroism
Strong: yellow-brown
Strong: pale lavender dark blueAnthony et al
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Translucent
TranslucentAnthony et al, Translucent
Refractive Index
-9999-9999
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
-9999-9999
0
0.296
👆🏻
Clarity
Translucent
TranslucentAnthony et al
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
-
-
Reproductive
-
-
Digestive
-
-
Psychology
-
Empowerment
Healing
-
Emotional healing
Qualities Associated
Protection
Emotional Healing