Origin
Southern and central Africa
Canada, Pakistan
Color
Blue
Reddish, Greenish, White, Red, Yellow, Green, Grey, Blue, Brown, Colorless, gray, orange
For which Rashi?
Leo, Gemini, Capricorn
Virgo, Capricorn
Element of Planets
Water
Earth
Powers
Protection
Protection
Specific Gravity
-9999
2.93-2.96
Fracture
-
Subconchoidal, Conchoidal
Cleavage
None
Distinct on {010}, imperfect {110} and {011}
Chemical Composition
SiO2 with gold
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
-
Vitreous, Resinous
Pleochroism
-
StrongArthur Thomas
Transparency
-
Transparent, Translucent
Refractive Index
-9999
1.525-1.686
Crystal System
Trigonal
Orthorhombic
Birefringence
-9999
0.155
Neurological
Aids in communication and self-expression
Promotes focus and concentration
Cardiovascular
Supports heart health
Supports heart health
Psychology
Communication
Stability
Healing
Emotional healing
Emotional healing
Qualities Associated
Communication
Centering