Origin
-
Southern and central Africa
Color
Brownish, Black
Yellow, Blue, Black, Green, gray
Streak
Brown
White
For which Rashi?
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-
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
3.263.43-3.44
1
7.18
👆🏻
Fracture
Uneven
-
Cleavage
None
None Observed
Mohs Hardness
-99996.5-7
2
10
👆🏻
Chemical Composition
NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Resinous
Vitreous
Pleochroism
Strong: yellow-brown
visible
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Translucent
-
Refractive Index
-99991.696-1.702
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
Triclinic
Birefringence
-99990.005
0
0.296
👆🏻
Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda
Physical
Neurological
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-
Cardiovascular
-
-
Respiratory
-
-
Reproductive
-
-
Digestive
-
-
Psychology
-
-
Healing
-
Emotional healing
Qualities Associated
Protection
Transformation