Specific Gravity
-9999
3.25-3.35
Fracture
-
Conchoidal, ConchoidalWalter Schumann
Cleavage
-
Perfect in three directions
Chemical Composition
Sb2O3
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pleochroism
-
Weak; dark emerald green
Transparency
-
TranslucentHerve Nicolas Lazzarelli
Refractive Index
2.087
1.644-1.720
Crystal System
cubic (α)<570 °C
Trigonal
Birefringence
-9999
0.051-0.053
Clarity
-
TranslucentHerve Nicolas Lazzarelli
Neurological
-
Aids in mental clarity and focus
Psychology
-
Emotional Healing
Healing
-
Emotional healing
Qualities Associated
Protection
Emotional Healing