Origin
Tanzania, Madagascar, Kenya, Sri Lanka, Burma, Australia
Brazil, Southern and central Africa, Sri Lanka
Color
Green, Brown, Colorless, Greenish, Yellow
Red, gray
Streak
White
Red, Black
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
-
Insoluble in acids
Durability
-
-
Specific Gravity
3.25-3.454.20-4.30
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven, Conchoidal
Cleavage
Good on {110}
{110} good, 100 moderate, parting on {092} and {011}
Mohs Hardness
6.56-6.5
2
10
👆🏻
Chemical Composition
Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous
Adamantine
Pleochroism
X = colorless to green; Y = colorless
Weak to distinct brownish red-green-yellow
Dispersion
0.020.33
0.005
1
👆🏻
Transparency
-
Transparent, Translucent
Refractive Index
1.660-1.6852.609-2.903
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
tetragonal
Birefringence
0.012-0.0170.296
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Physical
Neurological
-
-
Cardiovascular
-
-
Respiratory
-
Good
Reproductive
-
-
Digestive
-
-
Psychology
Harmony
Clarity
Healing
Emotional healing
Physical healing
Qualities Associated
Self-worth
Awareness