Astrology
Origin
Not Available, Southern and central Africa
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
Color
White, Reddish, Colorless, gray, Red
Blue, Violet, Greenish, Brown, Colorless, Yellow, gray
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
Brittle
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.77
2.57-2.66
Fracture
Uneven
Subconchoidal, Conchoidal
Cleavage
Perfect [001] good [010] poor [110]
Fair on {100}, poor on {001} and {010}
Mohs Hardness
6-6.5
7-7.5
Chemical Composition
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Mg2Al4Si5O18
Optical Properties
Luster
Vitreous
Greasy, Vitreous
Pleochroism
colorless.
X = pale yellow
Dispersion
Not Available
Not Available
Transparency
Transparent
Not Available
Refractive Index
1.575-1.588
Not Available
Optic Character
Not Available
Not Available
Crystal System
Triclinic
Orthorhombic
Birefringence
0.012-0.013
Not Available
Clarity
Transparent
Not Available
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
