Astrology
Origin
Southern and central Africa, violet, blue, violet, blue
Southern and central Africa
Color
Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink
Green
Streak
White
Greenish, White
For which Rashi?
Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius
Not Available
Planet
Saturn
Not Available
Element of Planets
Water
Not Available
How to Wear?
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Receptive
Not Available
Deities
Isis
Not Available
Not to wear with
Not Available
Not Available
Powers
Healing
Not Available
Birthstone
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
3.16-3.43
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
{110} Good, {110} Good
Mohs Hardness
7-8.5
5-6
Chemical Composition
AlAl6O3BSi3O18
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Optical Properties
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 -- very pale green -- very pale green
Dispersion
None
Not Available
Transparency
Translucent, Translucent to opaque
TranslucentAnthony et al, Handbook of mineralogy (2001)
Refractive Index
1.669-1.723
1.662-1.723
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Not Available
Birefringence
0.011-0.037
Not Available
Clarity
Translucent
TranslucentAnthony et al
Benefits
Physical
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
Respiratory
Not Available
Not Available
Reproductive
Not Available
Not Available
Digestive
Not Available
Not Available
Psychology
Not Available
Not Available
Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
