Origin
USA, Zambia, Madagascar, India, Sri Lanka, Russia, Australia, Widespread; main sources are Brazil, Uruguay, Bolivia, Argentina, East Africa, Namibia, Brazil
Brazil, Madagascar, Zimbabwe, Russia, Sri Lanka, India, Burma, Origins: Brazil
Color
Violet, White, Colorless, Blue, Red, Green, Yellow, pink
Greenish, Green, Brownish, Red, Blue, Brown, gray
Streak
White
White
For which Rashi?
Pisces, Scorpio, Sagittarius
-
Planet
-
-
Element of Planets
Water
Earth, Water
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
Diana
-
Not to wear with
-
-
Powers
Love, Courage
Healing
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
insoluble in common solvents
-
Durability
-
-
Specific Gravity
2.653.69-3.81
1
7.18
👆🏻
Fracture
Conchoidal, ConchoidalWalter Schumann
Uneven, Conchoidal to uneven, ConchoidalWalter Schumann
Cleavage
Indiscernible
Distinct on {110}, imperfect on {010}, poor on {001}
Mohs Hardness
78.5
2
10
👆🏻
Chemical Composition
SiO2
BeAl 2 O 4
Luster
Vitreous
Vitreous
Pleochroism
None
X = red; Y = yellow-orange; Z = emerald-green
Dispersion
0.010.02
0.005
1
👆🏻
Transparency
Transparent, Transparent to translucent
Transparent, Translucent, Transparent to translucent
Refractive Index
1.544-1.5531.746-1.763
1
3.25
👆🏻
Optic Character
-
Biaxial/+
Crystal System
Trigonal
Orthorhombic
Birefringence
0.0090.007-0.013
0
0.296
👆🏻
Clarity
Transparent
Transparent