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
perfect along [010] and [100]
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
X = very pale blue; Y = pale blue; Z = deep blue
Blue, Green, Greenish, Black
Indistinct parting on [111]
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
TransparentUlrich Henn and Claudio C. Milisenda
Enhances mental clarity and focus
Aids in digestion and soothes the stomach