Origin
Brazil, Madagascar, Zimbabwe, Russia, Sri Lanka, India, Burma, Origins: Brazil
Burma, Sri Lanka, India, Madagascar, Kenya, Tanzania, Thailand, Cambodia, China, Australia, USA
Color
Greenish, Green, Brownish, Red, Blue, Brown, gray
Colorless, Yellow, Green, Violet, White, Blue, Red, pink
Streak
White
-
For which Rashi?
-
Pisces, Taurus, Gemini, Libra
Planet
-
Saturn
Element of Planets
Earth, Water
Water
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
Apollo
Not to wear with
-
-
Powers
Healing
Psychic Power
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
Brittle
-
Solubility
-
insoluble
Durability
-
-
Specific Gravity
3.69-3.813.95-4.03
1
7.18
👆🏻
Fracture
Uneven, Conchoidal to uneven, ConchoidalWalter Schumann
Uneven
Cleavage
Distinct on {110}, imperfect on {010}, poor on {001}
None, but may exhibit parting
Mohs Hardness
8.59
2
10
👆🏻
Chemical Composition
BeAl 2 O 4
Al 2 O 3
Luster
Vitreous
Vitreous, Adamantine
Pleochroism
X = red; Y = yellow-orange; Z = emerald-green
Strong
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Transparent, Translucent, Transparent to translucent
Transparent, Translucent, Transparent to opaque
Refractive Index
1.746-1.7631.762-1.788
1
3.25
👆🏻
Optic Character
Biaxial/+
-
Crystal System
Orthorhombic
Trigonal
Birefringence
0.007-0.0130.008-0.009
0
0.296
👆🏻
Clarity
Transparent
Transparent