Origin
Canada, Russia
Linares, Jaén, Andalusia, Spain
Color
Black, Green, gray
Blue
Streak
gray, Green
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
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.3-3.55.35
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
Perfect on [110]
Perfect on {100}, imperfect on {001}
Mohs Hardness
5-62.5
2
10
👆🏻
Chemical Composition
NaNa2(Fe++4Fe+++)Si8O22(OH)2
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous
Sub-Adamantine, Vitreous
Pleochroism
Strong: Blue-greens
X = pale blue; Y = blue; Z = Prussian blue
Dispersion
0.020.05
0.005
1
👆🏻
Transparency
-
Transparent
Refractive Index
1.652-1.6991.809-1.859
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
monoclinic
Birefringence
-99990.050
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
Promotes psychic abilities and spiritual growth
-
Cardiovascular
-
-
Respiratory
Excellent
Good
Reproductive
-
-
Digestive
-
Supports digestive health
Psychology
Insight
Self-Expression
Healing
Emotional healing
Emotional healing
Qualities Associated
Manifestation
Communication