Origin
Afghanistan, Southern and central Africa
Czech
Color
Blue, Greenish, Violet
Brownish, Black, Colorless, White, gray, Blue, Green
Streak
Blue, White
White
For which Rashi?
-
-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
Brittle
-
Solubility
Soluble
insoluble
Durability
-
-
Specific Gravity
2.756.46-6.57
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
Imperfect on {110}
Good [110] and [021]
Mohs Hardness
5.53-3.5
2
10
👆🏻
Chemical Composition
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Adamantine, Vitreous, Resinous
Pleochroism
-
-
Dispersion
0.020.06
0.005
1
👆🏻
Transparency
-
Transparent, Translucent
Refractive Index
1.5001.803-2.078
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
Orthorhombic
Birefringence
-99990.273
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Communication
Clarity
Healing
Emotional healing
Emotional healing
Qualities Associated
Clarity
Clarity