Astrology
Origin
USA
Southern and central Africa
Color
Red
Colorless, Green, Yellow, White, Colorless, Green, Yellow, White
Streak
Not Available
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
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.97-2.22
3.23-3.26
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Not Available
Perfect on {010} imperfect on {100}
Mohs Hardness
6-6.5
6.5-7
Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Optical Properties
Luster
Not Available
Vitreous
Pleochroism
AbsentWalter Schumann
colorless.
Dispersion
None
Not Available
Transparency
Transparent, Translucent
Transparent
Refractive Index
1.370-1.470
1.635-1.671
Optic Character
Not Available
Not Available
Crystal System
Amorphous
Orthorhombic
Birefringence
Not Available
0.033-0.042
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
