Astrology
Origin
Afghanistan, Italy
Australia
Color
Blue, Colorless
Reddish, Brown, Red, pink
Streak
White
White
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
Not Available
Energy
Not Available
Not Available
How to Wear?
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Deities
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Not Available
Not Available
Birthstone
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Partly soluble in HCl.
Durability
Not Available
Not Available
Specific Gravity
2.55-2.65
3.32-3.43
Fracture
Conchoidal
Conchoidal
Cleavage
Perfect {10 1 0}
{100} perfect; {110} and {1 1 0} good; {010} poor
Mohs Hardness
5.5-6
5.5-6
Chemical Composition
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Optical Properties
Luster
Vitreous
Vitreous
Pleochroism
Not Available
Weak
Dispersion
Not Available
Not Available
Transparency
Transparent
Transparent, Translucent
Refractive Index
1.523
1.662-1.707
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Triclinic
Birefringence
0.006
0.013-0.015
Clarity
Transparent
Transparent
Benefits
Physical
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
Respiratory
Not Available
Not Available
Reproductive
Not Available
Not Available
Digestive
Not Available
Not Available
Psychology
Not Available
Not Available
Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
