Origin
Southern and central Africa
Southern and central Africa
Color
Brown, Black, Blue
Colorless, gray, White
Streak
-
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
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.652.40-2.42
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
-
Cleavage
None
{010} Perfect, {001} Distinct
Mohs Hardness
-99994.5
2
10
👆🏻
Chemical Composition
SiO 2Ulrich Henn and Claudio C.
Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
-
Vitreous
Pleochroism
Definite: brown reddish-brownWalter Schumann
-
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
Transparent, Translucent
Transparent
Refractive Index
1.544-1.5531.584-1.615
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
Birefringence
0.0090.028-0.030
0
0.296
👆🏻
Clarity
Transparent
Transparent
Physical
Neurological
Improves digestion and metabolism
-
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Protection
Imagination
Healing
Emotional healing
Emotional healing
Qualities Associated
Protection
Harmony