Origin
Southern and central Africa
Southern and central Africa
Color
Greenish, Blue, Colorless, Green, Yellow
White, Colorless, Blue, Red, Green, Yellow, Violet
Specific Gravity
3.17-3.24
2.58-2.64
Cleavage
(0001) indistinct
None
Mohs Hardness
9-9.5
6.5-7
Chemical Composition
SiCArthur Thomas , Gemstones (2009)
SiO 2Walter Schumann , Gemstones of the world (2001)
Transparency
-
TranslucentWalter Schumann
Refractive Index
2.648-2.691
1.530-1.540
Crystal System
6H polytype
-
Birefringence
0.043
0.004
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TranslucentWalter Schumann
Neurological
-
Enhances mental clarity and focus
Psychology
Clarity
Harmony
Healing
-
Emotional healing
Qualities Associated
Creativity
Abundance