Origin
Afghanistan, Southern and central Africa
Southern and central Africa
Color
Blue, Greenish, Violet
Colorless, Blue, Brown, Green, gray
Streak
Blue, White
White
For which Rashi?
-
Gemini
Planet
-
Venus, Neptune
Element of Planets
-
Water, Air
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
Healing
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
Brittle
Brittle
Solubility
Soluble
-
Durability
-
-
Specific Gravity
2.753.90-4.00
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Conchoidal
Cleavage
Imperfect on {110}
Perfect on {001}, good on {210}, poor on {010}
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.
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous, Pearly
Pleochroism
-
Weakly trichroiC
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
-
-
Refractive Index
1.5001.619-1.635
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
Orthorhombic
Birefringence
-99990.004-0.012
0
0.296
👆🏻
Clarity
-
-
Physical
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Communication
Peace
Healing
Emotional healing
Emotional healing
Qualities Associated
Clarity
Divine Guidance