Origin
Sri Lanka
Southern and central Africa
Color
Blue
Blue, Colorless, White
Streak
-
White
For which Rashi?
Sagittarius, Scorpio
Gemini, Virgo
Planet
Pluto
-
Element of Planets
-
Earth
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
Hephaestus
Quan Yin
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.65-4.552.45-2.58
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal
Cleavage
None, but may exhibit slight parting
None
Mohs Hardness
7.5-83-3.5
2
10
👆🏻
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous
Pleochroism
-
-
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
-
-
Refractive Index
1.735-1.7901.583-1.608
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
monoclinic
Birefringence
-99990.019
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
-
Physical
Neurological
-
Aids in mental clarity and focus
Cardiovascular
-
-
Respiratory
-
Good
Reproductive
-
-
Digestive
-
-
Psychology
Empowerment
Calming
Healing
-
Emotional healing
Qualities Associated
Transformation
Calming