Origin
Southern and central Africa
Mexico, Thailand, Italy, Austria
Color
Blue, Violet, Brown, White, Greenish, pink
Green, Brown, Colorless, Greenish, gray, Yellow, White
Streak
White
White
For which Rashi?
Leo, Sagittarius
-
Planet
Saturn
-
Element of Planets
Water
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
Isis
-
Not to wear with
-
-
Powers
Healing
-
Birthstone
Planetary
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
3.26-3.413.30-3.50
1
7.18
👆🏻
Fracture
Fibrous, ConchoidalWalter Schumann
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
Perfect on {110}, poor on {101}, {001} rare
Mohs Hardness
7-8.55
2
10
👆🏻
Chemical Composition
AlAl6O3BSi3O18
Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous, Adamantine, Silky
Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
-
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
Translucent, Translucent to opaque
Transparent, Translucent
Refractive Index
1.669-1.7231.614-1.636
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
Orthorhombic
Birefringence
0.011-0.0370.022
0
0.296
👆🏻
Clarity
Translucent
Transparent
Physical
Neurological
Enhances mental clarity and focus
-
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Patience
Emotional Healing
Healing
Emotional healing
Emotional healing
Qualities Associated
Patience
Inner Peace