Origin
Brazil, Madagascar, Zimbabwe, Russia, Sri Lanka, India, Burma, Origins: Brazil
USA, Zambia, Madagascar, India, Sri Lanka, Russia, Australia, Widespread; main sources are Brazil, Uruguay, Bolivia, Argentina, East Africa, Namibia, Brazil
Color
Greenish, Green, Brownish, Red, Blue, Brown, gray
Violet, White, Colorless, Blue, Red, Green, Yellow, pink
Streak
White
White
For which Rashi?
-
Pisces, Scorpio, Sagittarius
Planet
-
-
Element of Planets
Earth, Water
Water
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
Diana
Not to wear with
-
-
Powers
Healing
Love, Courage
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
Brittle
-
Solubility
-
insoluble in common solvents
Durability
-
-
Specific Gravity
3.69-3.812.65
1
7.18
👆🏻
Fracture
Uneven, Conchoidal to uneven, ConchoidalWalter Schumann
Conchoidal, ConchoidalWalter Schumann
Cleavage
Distinct on {110}, imperfect on {010}, poor on {001}
Indiscernible
Mohs Hardness
8.57
2
10
👆🏻
Chemical Composition
BeAl 2 O 4
SiO2
Luster
Vitreous
Vitreous
Pleochroism
X = red; Y = yellow-orange; Z = emerald-green
None
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
Transparent, Translucent, Transparent to translucent
Transparent, Transparent to translucent
Refractive Index
1.746-1.7631.544-1.553
1
3.25
👆🏻
Optic Character
Biaxial/+
-
Crystal System
Orthorhombic
Trigonal
Birefringence
0.007-0.0130.009
0
0.296
👆🏻
Clarity
Transparent
Transparent