Origin
Canada, Russia
India, Southern and central Africa, Madagascar
Color
Black, Green, gray
Black, Brownish, Greenish
Streak
gray, Green
Brown
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
3.3-3.53.18-3.22
1
7.18
👆🏻
Fracture
Uneven
Uneven, Conchoidal
Cleavage
Perfect on [110]
{1011} Indistinct
Mohs Hardness
5-6-9999
2
10
👆🏻
Chemical Composition
NaNa2(Fe++4Fe+++)Si8O22(OH)2
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Luster
Vitreous
Vitreous
Pleochroism
Strong: Blue-greens
Very strong: yellow-brown pale yellow
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
-
Transparent, Translucent
Refractive Index
1.652-1.6991.635-1.672
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
-
Birefringence
-99990.025
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
Promotes psychic abilities and spiritual growth
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Cardiovascular
-
-
Respiratory
Excellent
Good
Reproductive
-
-
Digestive
-
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Psychology
Insight
Protection
Healing
Emotional healing
Emotional healing
Qualities Associated
Manifestation
Protection & Grounding