Origin
Southern and central Africa
Canada, Pakistan
Color
Blue, Violet, Brown, White, Greenish, pink
Reddish, Greenish, White, Red, Yellow, Green, Grey, Blue, Brown, Colorless, gray, orange
Streak
White
White
For which Rashi?
Leo, Sagittarius
Virgo, Capricorn
Planet
Saturn
-
Element of Planets
Water
Earth
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
Isis
-
Not to wear with
-
-
Powers
Healing
Protection
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
-
Dilute acid
Durability
-
-
Specific Gravity
3.26-3.412.93-2.96
1
7.18
👆🏻
Fracture
Fibrous, ConchoidalWalter Schumann
Subconchoidal, Conchoidal
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
7-8.53.5-4
2
10
👆🏻
Chemical Composition
AlAl6O3BSi3O18
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous, Resinous
Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
StrongArthur Thomas
Dispersion
0.010.17
0.005
1
👆🏻
Transparency
Translucent, Translucent to opaque
Transparent, Translucent
Refractive Index
1.669-1.7231.525-1.686
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
Orthorhombic
Birefringence
0.011-0.0370.155
0
0.296
👆🏻
Clarity
Translucent
Transparent
Physical
Neurological
Enhances mental clarity and focus
Promotes focus and concentration
Cardiovascular
-
Supports heart health
Respiratory
Good
Poor
Reproductive
-
-
Digestive
-
-
Psychology
Patience
Stability
Healing
Emotional healing
Emotional healing
Qualities Associated
Patience
Centering