Origin
-
Switzerland
Color
Blue, Green
Brown, Brownish, Yellow, Black, Reddish
Streak
Blue
White, gray
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
-
-
Durability
-
-
Specific Gravity
3.80-4.153.7-3.8
1
7.18
👆🏻
Fracture
Uneven
Subconchoidal, Conchoidal
Cleavage
perfect along [010] and [100]
Distinct on {010}
Mohs Hardness
3.5-47-7.5
2
10
👆🏻
Chemical Composition
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Luster
Silky
Resinous
Pleochroism
X = very pale blue; Y = pale blue; Z = deep blue
X = colorless; Y = pale yellow; Z = golden yellow
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Translucent
-
Refractive Index
1.752-1.8151.736-1.762
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
monoclinic
Birefringence
0.0630.009-0.015
0
0.296
👆🏻
Clarity
Translucent
-
Physical
Neurological
-
Enhances mental clarity and focus
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Communication
Protection
Healing
Emotional healing
Physical healing
Qualities Associated
Communication
Protection