Origin
-
Sri Lanka
Color
Black, Blue, Yellow, Green
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Green, gray
Streak
Grey, Greenish, Brown
White, Brownish
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
Brittle
Solubility
-
insoluble
Durability
-
-
Specific Gravity
3.28-3.446.86-7.03
1
7.18
👆🏻
Fracture
Uneven, Splintery
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
{100} imperfect, {110} indistinct; partings on {111} or {011}
Mohs Hardness
5.0-6.06-7
2
10
👆🏻
Chemical Composition
Na2Fe2+3Fe3+2Si8O22(OH)2
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Silky
Adamantine, Greasy
Pleochroism
X = blue
Pleochroic haloes have been observed. Dichroic in yellow
Dispersion
0.020.07
0.005
1
👆🏻
Transparency
-
Transparent, Translucent
Refractive Index
1.680-1.6981.990-2.105
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
tetragonal
Birefringence
0.005-0.0080.096-0.098
0
0.296
👆🏻
Clarity
-
Transparent
Physical
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
Supports heart health
Supports heart health
Respiratory
Good
Poor
Reproductive
-
-
Digestive
-
-
Psychology
Empowerment
Focus
Healing
Emotional healing
Emotional healing
Qualities Associated
Clear Thinking
Manifestation