Origin
Sri Lanka
Southern and central Africa
Color
Red, Blue, Green, Brown, Black
Red, Brown, Black
Streak
White
Brownish, Red
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
3.63-3.95.85-6.15
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Conchoidal
Cleavage
Indistinct
Fair in four directions forming octahedrons
Mohs Hardness
7.5-83.5-4
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Adamantine
Pleochroism
Absent
visible
Dispersion
0.020.05
0.005
1
👆🏻
Transparency
Transparent, Translucent
TranslucentWalter Schumann
Refractive Index
1.770-1.7802.849
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
cubic
Birefringence
-9999-9999
0
0.296
👆🏻
Clarity
Transparent
TranslucentWalter Schumann
Physical
Neurological
-
-
Cardiovascular
Supports heart health
Supports heart health
Respiratory
Good
Poor
Reproductive
-
-
Digestive
-
-
Psychology
Creativity
Vitality
Healing
Emotional healing
Emotional healing
Qualities Associated
Emotional Healing
Vitality