1 Astrology
1.1 Origin
Southern and central Africa, violet, blue, violet, blue
1.2 Color
Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink
1.3 Streak
White
1.4 For which Rashi?
Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius
1.5 Planet
Saturn
1.6 Element of Planets
Water
1.7 How to Wear?
1.7.1 Finger
Not Available
1.7.2 Ring Metal
Not Available
1.8 Energy
Receptive
1.9 Deities
Isis
1.10 Not to wear with
Not Available
1.11 Powers
Healing
1.12 Birthstone
1.12.1 Planetary
Not Available
1.12.2 Talisman
Not Available
2 Physical Properties
2.1 Tenacity
Not Available
2.2 Solubility
Not Available
2.3 Durability
Not Available
2.4 Specific Gravity
2.5 Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
2.6 Cleavage
Distinct on {100}, poor on {110}; parting on {001}
2.7 Mohs Hardness
2.8 Chemical Composition
AlAl6O3BSi3O18
3 Optical Properties
3.1 Luster
Vitreous
3.2 Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
3.3 Dispersion
3.4 Transparency
Translucent, Translucent to opaque
3.5 Refractive Index
3.6 Optic Character
Not Available
3.7 Crystal System
Orthorhombic
3.8 Birefringence
3.9 Clarity
Translucent
4 Benefits
4.1 Physical
4.1.1 Neurological
Not Available
4.1.2 Cardiovascular
Not Available
4.1.3 Respiratory
Not Available
4.1.4 Reproductive
Not Available
4.1.5 Digestive
Not Available
4.2 Psychology
Not Available
4.3 Healing
Not Available
4.4 Qualities Associated
Not Available