1 Astrology
1.1 Origin
Southern and central Africa
Austria, Spain, Russia, Canada, Australia
1.2 Color
Blue
Colorless, Brownish, Yellow, Green, gray, White
1.3 Streak
1.4 For which Rashi?
Not Available
Not Available
1.5 Planet
Not Available
Not Available
1.6 Element of Planets
Not Available
Not Available
1.7 How to Wear?
1.7.1 Finger
Not Available
Not Available
1.7.2 Ring Metal
Not Available
Not Available
1.8 Energy
Not Available
Not Available
1.9 Deities
Not Available
Not Available
1.10 Not to wear with
Not Available
Not Available
1.11 Powers
Not Available
Not Available
1.12 Birthstone
1.12.1 Planetary
Not Available
Not Available
1.12.2 Talisman
Not Available
Not Available
2 Physical Properties
2.1 Tenacity
2.2 Solubility
Not Available
Not Available
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
2.8 Fracture
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006)
Conchoidal, Brittle
2.9 Cleavage
Not Available
{001} perfect; {111} imperfect, may exhibit parting on , {011}
2.11 Mohs Hardness
2.13 Chemical Composition
SiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
3 Optical Properties
3.1 Luster
3.2 Pleochroism
Not Available
Not Available
3.3 Dispersion
3.5 Transparency
Transparent, Translucent
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
3.6 Refractive Index
1.544-1.5531.735-1.738
1
3.25
3.7 Optic Character
Not Available
Not Available
3.8 Crystal System
3.9 Birefringence
0.009Not Available
0
0.296
3.10 Clarity
Transparent
TransparentWalter Schumann
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
Not Available
4.1.2 Cardiovascular
Not Available
Not Available
4.1.3 Respiratory
Not Available
Not Available
4.1.4 Reproductive
Not Available
Not Available
4.1.5 Digestive
Not Available
Not Available
4.2 Psychology
Not Available
Not Available
4.3 Healing
Not Available
Not Available
4.4 Qualities Associated
Not Available
Not Available