Origin
Color
Streak
For which Rashi?
Planet
Element of Planets
Energy
Finger
Ring Metal
Deities
Not to wear with
Powers
Planetary
Talisman
Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
Luster
Pleochroism
Dispersion
Transparency
Refractive Index
Optic Character
Crystal System
Birefringence
Clarity
Neurological
Cardiovascular
Respiratory
Reproductive
Digestive
Psychology
Healing
Qualities Associated
Southern and central Africa
ConchoidalWalter Schumann
SiO 2Ulrich Henn and Claudio C.
Definite: brown reddish-brownWalter Schumann
Improves digestion and metabolism
NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)