Origin
Canada, Russia
Italy
Color
Black, Green, gray
Blue, Green
Streak
gray, Green
Blue, Green
Solubility
-
Effervesces in cold
Specific Gravity
3.3-3.5
4-4.2
Fracture
Uneven
Splintery
Cleavage
Perfect on [110]
Perfect on {100} and {010}
Chemical Composition
NaNa2(Fe++4Fe+++)Si8O22(OH)2
CuZn(CO3)(OH)2
Luster
Vitreous
Silky, Vitreous
Pleochroism
Strong: Blue-greens
Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue
Refractive Index
1.652-1.699
1.672-1.688
Crystal System
monoclinic
monoclinic
Birefringence
-9999
0.139-0.143
Neurological
Promotes psychic abilities and spiritual growth
-
Respiratory
Excellent
Poor
Psychology
Insight
Emotional Healing
Healing
Emotional healing
Emotional healing
Qualities Associated
Manifestation
Communication