Origin
India, Southern and central Africa, Madagascar
Italy
Color
Black, Brownish, Greenish
Blue, Green
Streak
Brown
Blue, Green
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
-
Effervesces in cold
Durability
-
-
Specific Gravity
3.18-3.224-4.2
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Splintery
Cleavage
{1011} Indistinct
Perfect on {100} and {010}
Mohs Hardness
-99994
2
10
👆🏻
Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
CuZn(CO3)(OH)2
Luster
Vitreous
Silky, Vitreous
Pleochroism
Very strong: yellow-brown pale yellow
Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue
Dispersion
0.020.03
0.005
1
👆🏻
Transparency
Transparent, Translucent
-
Refractive Index
1.635-1.6721.672-1.688
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
monoclinic
Birefringence
0.0250.139-0.143
0
0.296
👆🏻
Clarity
Transparent
-
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
Good
Poor
Reproductive
-
-
Digestive
-
-
Psychology
Protection
Emotional Healing
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection & Grounding
Communication