Origin
Southern and central Africa
Brazil, Colombia, Southern and central Africa
Color
Blue, Violet, Brown, White, Greenish, pink
Greenish, Blue, Colorless, White, Green
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
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.26-3.413.08-3.12
1
7.18
👆🏻
Fracture
Fibrous, ConchoidalWalter Schumann
ConchoidalWalter Schumann
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
{010} Perfect
Mohs Hardness
7-8.57.5
2
10
👆🏻
Chemical Composition
AlAl6O3BSi3O18
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous
Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
Weak: colorless-(greenish) yellow
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
Translucent, Translucent to opaque
-
Refractive Index
1.669-1.7231.650-1.677
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
Birefringence
0.011-0.0370.019-0.025
0
0.296
👆🏻
Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda
Physical
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Patience
Harmony
Healing
Emotional healing
Emotional healing
Qualities Associated
Patience
Communication