1 Astrology
1.1 Origin
Not Available, Southern and central Africa
Brazil
1.2 Color
Not Available
White, Blue, Yellow, Brown, Green, Brownish, Greenish, gray
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
Not Available
Not Available
2.2 Solubility
Not Available
Not Available
2.3 Durability
Not Available
Not Available
2.4 Specific Gravity
1.98-2.502.65-2.90
1
7.18
2.7 Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
Gemstones (2009), Flexible Flexible fragments.
2.8 Cleavage
Not Available
{001} Perfect
2.9 Mohs Hardness
5.5-6.5Not Available
2
10
2.13 Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
3 Optical Properties
3.1 Luster
3.2 Pleochroism
AbsentWalter Schumann
NilArthur Thomas
3.3 Dispersion
3.5 Transparency
3.6 Refractive Index
1.37-1.521.534-1.601
1
3.25
3.7 Optic Character
Not Available
Not Available
3.8 Crystal System
Not Available
Not Available
3.9 Birefringence
Not Available0.050
0
0.296
3.10 Clarity
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