Origin
USA, Southern and central Africa
-
Color
Brown, Green, White, gray, Blue, Yellow
Green
Specific Gravity
4.00-4.65
3.18-3.37
Fracture
Uneven, Sub-Conchoidal
Conchoidal
Cleavage
Perfect on [1011]
Perfect on 210
Mohs Hardness
5-5.5
5.5-6
Chemical Composition
ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na(Fe,Mg)7(AlSi7O22)(OH)2
Luster
Vitreous, Pearly
-
Transparency
Translucent
-
Refractive Index
1.620-1.850
1.635-1.663
Crystal System
Trigonal
-
Birefringence
0.223-0.227
0.0170-0.230
Neurological
-
Enhances mental clarity and focus
Respiratory
Good
Excellent
Psychology
Emotional Healing
Protection
Healing
Emotional healing
Emotional healing
Qualities Associated
Harmony
Inner Power