Origin
-
-
Color
Red, Black
Blue, Green
Streak
-
Blue
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
4.33.80-4.15
1
7.18
👆🏻
Fracture
-
Uneven
Cleavage
None.
perfect along [010] and [100]
Mohs Hardness
7.5-8.53.5-4
2
10
👆🏻
Chemical Composition
Fe3Al2Si3O12
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Silky
Pleochroism
-
X = very pale blue; Y = pale blue; Z = deep blue
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Transparent, Translucent, Transparent to translucent
Translucent
Refractive Index
1.780-1.8101.752-1.815
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
Orthorhombic
Birefringence
-99990.063
0
0.296
👆🏻
Clarity
Transparent to translucent
Translucent
Physical
Neurological
-
-
Cardiovascular
Supports heart health
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Passion
Communication
Healing
Emotional healing
Emotional healing
Qualities Associated
Passion
Communication