Origin
Southern and central Africa
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Color
Green, Yellow, Red, Blue
Blue, Green, Brownish, Greenish, Colorless, gray
Specific Gravity
2.80-3.0
3.20-3.26
Cleavage
{110} Good
{010} perfect
Chemical Composition
NaFeS2•2(H2O)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous, Silky
Vitreous, Subadamantine, Silky
Pleochroism
Extreme
Colourless to pale brown to yellow
Transparency
Translucent
Transparent, Translucent
Refractive Index
1.580
1.653-1.685
Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c
Orthorhombic
Birefringence
-9999
0.020-0.022
Clarity
Translucent
Transparent
Cardiovascular
Supports heart health
-
Psychology
Optimism
Creativity
Healing
Emotional healing
Emotional healing
Qualities Associated
Growth
Creativity