Origin
Southern and central Africa
Mexico
Color
White, Colorless, Blue, Red, Green, Yellow, Violet
White, gray, Brownish, Yellow, Greenish
Specific Gravity
1.98-2.25
6.13
Fracture
Conchoidal
Conchoidal
Cleavage
None
Distinct on {001} and {110}, indistinct on {100}
Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
Pb 2(CO 3)Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pleochroism
-
Weakly pleochroic with O reddish and E greenish in thick sections.
Transparency
Transparent, Translucent
-
Refractive Index
1.370-1.470
2.117-2.145
Crystal System
-
tetragonal
Birefringence
-9999
0.027
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Digestive
Supports digestive health
-
Healing
Emotional healing
-
Qualities Associated
Optimism
Transformation