Origin
Southern and central Africa
Southern and central Africa
Color
Colorless, Greenish, Green, gray, Yellow
Colorless, Yellow
Streak
White
White
For which Rashi?
-
-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.21-3.382.59-2.60
1
7.18
👆🏻
Fracture
Irregular/uneven, Uneven
-
Cleavage
Perfect on {001}
{001} Perfect, {110} Distinct, {101} Distinct
Mohs Hardness
6-76-7
2
10
👆🏻
Chemical Composition
Ca 2Al 3(SiO 4) 3(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous
Vitreous
Pleochroism
StrongArthur Thomas
none.
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
Transparent
TransparentAnthony et al
Refractive Index
1.670-1.7341.583-1.614
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21
Birefringence
0.006-0.011-9999
0
0.296
👆🏻
Clarity
Transparent
TransparentAnthony et al
Physical
Neurological
-
-
Cardiovascular
-
Promotes mental clarity
Respiratory
Good
-
Reproductive
-
-
Digestive
-
-
Psychology
Empathy
Harmony
Healing
Emotional healing
Emotional healing
Qualities Associated
Empathy
Creativity