Origin
-
India, Southern and central Africa, Madagascar
Color
Blue, gray, Black
Black, Brownish, Greenish
Streak
Blue
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
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3-3.153.18-3.22
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Conchoidal
Cleavage
Good on [110] and on [001]
{1011} Indistinct
Mohs Hardness
6.0-6.5-9999
2
10
👆🏻
Chemical Composition
[ ]Na2(Mg3Al2)Si8O22(OH)2
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Luster
Vitreous, Pearly
Vitreous
Pleochroism
Strong
Very strong: yellow-brown pale yellow
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
-
Transparent, Translucent
Refractive Index
1.606-1.6371.635-1.672
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
-
Birefringence
-99990.025
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Communication
Protection
Healing
Emotional healing
Emotional healing
Qualities Associated
Peace
Protection & Grounding