Origin
Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
Brazil, Southern and central Africa
Color
Blue, Violet, Colorless, Red, Green, Brown
Blue, Green, Black
Streak
White
White
For which Rashi?
Sagittarius, Scorpio
Gemini, Sagittarius
Planet
Pluto
Jupiter
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
3.64-3.663.04-3.17
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven
Cleavage
None, but may exhibit slight parting
{001} Indistinct, {???} Indistinct
Mohs Hardness
85.5
2
10
👆🏻
Chemical Composition
MgAl2O4
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Luster
Vitreous
-
Pleochroism
Absent
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
Transparent, Translucent, Transparent to translucent
Transparent, Translucent
Refractive Index
1.731.604-1.646
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Isometric
monoclinic
Birefringence
-99990.031-0.036
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Physical
Neurological
-
Balances digestive system and reduces bloating
Cardiovascular
-
-
Respiratory
Good
Excellent
Reproductive
-
-
Digestive
-
Supports digestive health
Psychology
Revitalization
Clarity
Healing
Emotional healing
Emotional healing
Qualities Associated
Vitality
Psychic Abilities