Origin
Southern and central Africa
Linares, Jaén, Andalusia, Spain
Color
Brown, Black, Blue
Blue
Streak
-
Blue
For which Rashi?
-
-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.655.35
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Conchoidal
Cleavage
None
Perfect on {100}, imperfect on {001}
Mohs Hardness
-99992.5
2
10
👆🏻
Chemical Composition
SiO 2Ulrich Henn and Claudio C.
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
-
Sub-Adamantine, Vitreous
Pleochroism
Definite: brown reddish-brownWalter Schumann
X = pale blue; Y = blue; Z = Prussian blue
Dispersion
0.010.05
0.005
1
👆🏻
Transparency
Transparent, Translucent
Transparent
Refractive Index
1.544-1.5531.809-1.859
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
monoclinic
Birefringence
0.0090.050
0
0.296
👆🏻
Clarity
Transparent
Transparent
Physical
Neurological
Improves digestion and metabolism
-
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
Supports digestive health
Psychology
Protection
Self-Expression
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection
Communication