Origin
Linares, Jaén, Andalusia, Spain
Sri Lanka
Color
Blue
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Green, gray
Streak
Blue
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
Solubility
-
insoluble
Durability
-
-
Specific Gravity
5.356.86-7.03
1
7.18
👆🏻
Fracture
Conchoidal
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
Perfect on {100}, imperfect on {001}
{100} imperfect, {110} indistinct; partings on {111} or {011}
Mohs Hardness
2.56-7
2
10
👆🏻
Chemical Composition
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Sub-Adamantine, Vitreous
Adamantine, Greasy
Pleochroism
X = pale blue; Y = blue; Z = Prussian blue
Pleochroic haloes have been observed. Dichroic in yellow
Dispersion
0.050.07
0.005
1
👆🏻
Transparency
Transparent
Transparent, Translucent
Refractive Index
1.809-1.8591.990-2.105
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
tetragonal
Birefringence
0.0500.096-0.098
0
0.296
👆🏻
Clarity
Transparent
Transparent
Physical
Neurological
-
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Respiratory
Good
Poor
Reproductive
-
-
Digestive
Supports digestive health
-
Psychology
Self-Expression
Focus
Healing
Emotional healing
Emotional healing
Qualities Associated
Communication
Manifestation