Origin
Burma, Sri Lanka, India, Madagascar, Kenya, Tanzania, Thailand, Cambodia, China, Australia, USA
Southern and central Africa
Color
Colorless, Yellow, Green, Violet, White, Blue, Red, pink
Black, Reddish, gray, Red
Streak
-
Black, Brown, Reddish, Red
For which Rashi?
Pisces, Taurus, Gemini, Libra
Aries, Aquarius
Planet
Saturn
Saturn
Element of Planets
Water
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
Apollo
Mars
Not to wear with
-
-
Powers
Psychic Power
Healing
Birthstone
Planetary
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
insoluble
-
Durability
-
-
Specific Gravity
3.95-4.035.00-5.30
1
7.18
👆🏻
Fracture
Uneven
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
None, but may exhibit parting
None, may show partings on {0001} and {10 1 1}
Mohs Hardness
96
2
10
👆🏻
Chemical Composition
Al 2 O 3
Fe 2O 3Arthur Thomas , Gemstones (2009)
Luster
Vitreous, Adamantine
-
Pleochroism
Strong
O = brownish red; E = yellowish red
Dispersion
0.020.05
0.005
1
👆🏻
Transparency
Transparent, Translucent, Transparent to opaque
OpaqueHerve Nicolas Lazzarelli
Refractive Index
1.762-1.7882.690-3.220
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Trigonal
Trigonal
Birefringence
0.008-0.0090.280
0
0.296
👆🏻
Clarity
Transparent
OpaqueHerve Nicolas Lazzarelli