Color
Red
White, Reddish, gray, Brown, Brownish
Specific Gravity
3.5-3.6
2.55-2.65
Fracture
-
Subconchoidal, Conchoidal
Cleavage
None
[1010] Poor
Chemical Composition
Mg3Al2Si3O12
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Luster
Vitreous
Vitreous, Greasy
Transparency
Transparent, Translucent, Transparent to translucent
Transparent, Translucent
Refractive Index
1.720-1.760
1.529-1.547
Crystal System
Isometric
Hexagonal
Birefringence
-9999
0.003-0.004
Clarity
Transparent to translucent
Transparent
Healing
Emotional healing
-
Qualities Associated
Devotion
Clarity