Origin
Canada
Southern and central Africa
Color
White, Reddish, gray, Brown, Brownish
Red, Yellow, orange
Specific Gravity
2.55-2.65
3.56
Fracture
Subconchoidal, Conchoidal
-
Cleavage
[1010] Poor
{010} Good
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous, Greasy
-
Pleochroism
-
Nearly colorless to pale golden yellowAnthony et al
Transparency
Transparent, Translucent
-
Refractive Index
1.529-1.547
2.538-2.704
Crystal System
Hexagonal
-
Birefringence
0.003-0.004
0.166
Neurological
-
Enhances mental clarity and focus
Healing
-
Emotional healing
Qualities Associated
Clarity
Vitality