Origin
USA, Mexico, Tanzania, Brazil, Pakistan, Afghanistan, Origins: USA
Sri Lanka
Color
Green, Reddish, Brown, Yellow, Colorless, Blue, Violet, Grey
Blue
Streak
White
-
For which Rashi?
-
Sagittarius, Scorpio
Planet
-
Pluto
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
Hephaestus
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.26-3.363.65-4.55
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal
Cleavage
Good on {100}
None, but may exhibit slight parting
Mohs Hardness
6.5-77.5-8
2
10
👆🏻
Chemical Composition
(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Luster
Vitreous
Vitreous
Pleochroism
Strong
-
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
-
-
Refractive Index
1.656-1.7041.735-1.790
1
3.25
👆🏻
Optic Character
Biaxial/+
-
Crystal System
Triclinic
Isometric
Birefringence
0.009-0.012-9999
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TransparentUlrich Henn and Claudio C. Milisenda
Physical
Neurological
Enhances mental clarity and focus
-
Cardiovascular
-
-
Respiratory
Good
-
Reproductive
-
-
Digestive
-
-
Psychology
Harmony
Empowerment
Healing
Emotional healing
-
Qualities Associated
Balance
Transformation