Origin
Kenya, Southern and central Africa
Australia
Color
Green, Brown, Yellow, Red
Red
Streak
-
White, Colorless
For which Rashi?
-
-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.55-3.703.1
1
7.18
👆🏻
Fracture
-
Uneven, Conchoidal
Cleavage
Perfect
Perfect {010} imperfect {100}
Mohs Hardness
4-76-7
2
10
👆🏻
Chemical Composition
Al 2SiO 5Arthur Thomas , Gemstones (2009) More from other references
Ca2Al3(SiO4)3(OH)
Luster
Vitreous
Vitreous
Pleochroism
Blue stones strong trichroism: colorless/pale blue (greenish or violet)-blue dark blueHerve Nicolas Lazzarelli
Present
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Transparent
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.
Refractive Index
1.710-1.7351.695
1
3.25
👆🏻
Optic Character
Biaxial/+
-
Crystal System
-
Orthorhombic
Birefringence
0.012-0.0330.006-0.018
0
0.296
👆🏻
Clarity
Transparent
OpaqueHerve Nicolas Lazzarelli
Physical
Neurological
-
-
Cardiovascular
Supports heart health
-
Respiratory
Good
-
Reproductive
-
-
Digestive
-
-
Psychology
Intuition
Emotional Healing
Healing
Emotional healing
Emotional healing
Qualities Associated
Tranquility
Love