Astrology
Origin
Canada, Russia
Afghanistan
Color
Black, Green, Black, Green, Black, Green, gray, Black, Green, gray
White, Colorless, Blue, Red, Green, Yellow, Violet, pink
Streak
Not Available, Not Available, gray, Green
White
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
Not Available
Energy
Not Available
Not Available
How to Wear?
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Deities
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Not Available
Not Available
Birthstone
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.3-3.5
2.90-3.14
Fracture
Uneven, Brittle, Metallic, Brittle, Metallic
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Cleavage
Perfect on [110]
Imperfect; basal
Mohs Hardness
5-6
7.5-8
Chemical Composition
NaNa2(Fe++4Fe+++)Si8O22(OH)2
(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.
Optical Properties
Luster
Vitreous
Vitreous
Pleochroism
Strong: Blue-greens
Moderate dichroic
Dispersion
Not Available
Not Available
Transparency
Not Available
Transparent
Refractive Index
1.652-1.699
1.598-1.620
Optic Character
Not Available
Not Available
Crystal System
monoclinic
Hexagonal
Birefringence
Not Available
0.008-0.011
Clarity
Not Available
Transparent
Benefits
Physical
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
Respiratory
Not Available
Not Available
Reproductive
Not Available
Not Available
Digestive
Not Available
Not Available
Psychology
Not Available
Not Available
Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
