Origin
-
Southern and central Africa
Color
Black, Brown
Yellow, Blue, Colorless, White
Specific Gravity
5.2
3.28-3.31
Fracture
Uneven, Conchoidal
Conchoidal
Cleavage
None
None observed
Mohs Hardness
5.5-6.5
6.5-7.5
Chemical Composition
Fe 3O 4Ulrich Henn and Claudio C.
Al 6B 5O 15(F,OH) 3Ulrich Henn and Claudio C.
Refractive Index
2.42
1.638-1.650
Crystal System
-
Hexagonal
Birefringence
-9999
0.0130
Clarity
-
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
Enhances mental clarity and focus
-
Respiratory
Good
Excellent
Digestive
Supports digestive health
-
Psychology
Grounding
Clarity
Healing
Physical healing
Emotional healing
Qualities Associated
Energy
Clarity