Color
Yellow
Yellow, Brown, gray, Greenish
Specific Gravity
2.05-2.08
3.83-3.89
Fracture
-
Uneven, Conchoidal
Cleavage
None
Perfect on {01 1 1}
Mohs Hardness
-9999
3.5-4.5
Chemical Composition
SWalter Schumann , Gemstones of the world (2001)
Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Transparency
TranslucentWalter Schumann
Transparent, Translucent
Refractive Index
1.958-2.245
1.633-1.875
Crystal System
-
Trigonal
Birefringence
0.291
0.242
Clarity
TranslucentWalter Schumann
Transparent
Psychology
Creativity
Confidence
Healing
Emotional healing
Emotional healing
Qualities Associated
Vitality
Grounding