Origin
Southern and central Africa
-
Color
Blue, Violet, Brown, White, Greenish, pink
Brownish, Black
Streak
White
Brown
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
3.26-3.413.26
1
7.18
👆🏻
Fracture
Fibrous, ConchoidalWalter Schumann
Uneven
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
None
Mohs Hardness
7-8.5-9999
2
10
👆🏻
Chemical Composition
AlAl6O3BSi3O18
NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
Luster
Vitreous
Resinous
Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
Strong: yellow-brown
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
Translucent, Translucent to opaque
Translucent
Refractive Index
1.669-1.723-9999
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
-
Birefringence
0.011-0.037-9999
0
0.296
👆🏻
Clarity
Translucent
Translucent
Physical
Neurological
Enhances mental clarity and focus
-
Cardiovascular
-
-
Respiratory
Good
-
Reproductive
-
-
Digestive
-
-
Psychology
Patience
-
Healing
Emotional healing
-
Qualities Associated
Patience
Protection