Origin
Southern and central Africa
Madagascar
Color
Yellow, Green
Brownish, Black, Reddish, Brown, Blue
Streak
White
Reddish, Brown
Specific Gravity
2.56-2.75
3.84
Fracture
Uneven, Conchoidal
Subconchoidal, Conchoidal
Cleavage
two or three
{0001} good, {10 1 0} parting
Mohs Hardness
6-6.5
7.5-8
Chemical Composition
KAlSi3O8
(Ca,Ce)(Al,Ti,Mg)12O19
Pleochroism
None
O = brownish gray; E = gray
Transparency
Transparent, Translucent
-
Refractive Index
1.518-1.570
1.79-1.807
Crystal System
Triclinic or monoclinic
Hexagonal
Birefringence
0.008-0.010
-9999
Psychology
Flexibility
Empowerment
Healing
Emotional healing
Emotional healing
Qualities Associated
Balance
Balance