1 Astrology
1.1 Origin
Brazil, Kenya, Madagascar, Southern and central Africa
Southern and central Africa
1.2 Color
Brown, Black
White, Violet, Blue, Yellow, Brown, Brownish, Colorless, Greenish
1.3 Streak
1.4 For which Rashi?
Capricorn, Sagittarius
Not Available
1.5 Planet
1.6 Element of Planets
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
1.9 Deities
1.10 Not to wear with
Not Available
Not Available
1.11 Powers
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
2.5 Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
2.6 Cleavage
{0110} Indistinct
Distinct on {100} and {110}
2.7 Mohs Hardness
2.8 Chemical Composition
SiO2
3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
3 Optical Properties
3.1 Luster
Vitreous
Vitreous, Pearly, Resinous
3.2 Pleochroism
3.3 Dispersion
3.4 Transparency
Transparent, Translucent, Transparent to translucent
Transparent, Translucent
3.5 Refractive Index
1.544-1.5531.540-1.550
1
3.25
3.6 Optic Character
Not Available
Not Available
3.7 Crystal System
3.8 Birefringence
3.9 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