Origin
Tanzania
USA, Southern and central Africa
Color
Blue
Brown, Green, White, gray, Blue, Yellow
Streak
White, Colorless
White
For which Rashi?
Sagittarius, Pisces, Virgo
-
Planet
-
-
Element of Planets
Air, Water, Earth
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
Love, Healing
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
-
-
Durability
Hard
-
Specific Gravity
3.354.00-4.65
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Uneven, Sub-Conchoidal
Cleavage
Perfect {010}, imperfect {100}
Perfect on [1011]
Mohs Hardness
6.5-75-5.5
2
10
👆🏻
Chemical Composition
Ca2Al3(SiO4)3(OH)
ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous, Pearly
Pleochroism
Present
-
Dispersion
0.030.01
0.005
1
👆🏻
Transparency
Transparent, Translucent, Transparent to translucent
Translucent
Refractive Index
1.685-1.7071.620-1.850
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
Trigonal
Birefringence
0.006-0.0180.223-0.227
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent
Physical
Neurological
Enhances mental clarity and focus
-
Cardiovascular
-
-
Respiratory
Excellent
Good
Reproductive
-
-
Digestive
-
-
Psychology
Intuition
Emotional Healing
Healing
Emotional healing
Emotional healing
Qualities Associated
Communication
Harmony