Origin
India
Sri Lanka
Color
Blue, Greenish
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Green, gray
Streak
Blue, White
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
2.25-2.336.86-7.03
1
7.18
👆🏻
Fracture
-
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
Good on {010}
{100} imperfect, {110} indistinct; partings on {111} or {011}
Mohs Hardness
3-46-7
2
10
👆🏻
Chemical Composition
Ca(VO)Si4O10•4(H2O)
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Pearly
Adamantine, Greasy
Pleochroism
Visible: X=Z= colorless Y= blue
Pleochroic haloes have been observed. Dichroic in yellow
Dispersion
0.040.07
0.005
1
👆🏻
Transparency
-
Transparent, Translucent
Refractive Index
1.5421.990-2.105
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
tetragonal
Birefringence
0.0090.096-0.098
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
Communication
Focus
Healing
Emotional healing
Emotional healing
Qualities Associated
Communication
Manifestation