Origin
Brazil, Colombia, Southern and central Africa
Burma, Sri Lanka, India, Madagascar, Kenya, Tanzania, Thailand, Cambodia, China, Australia, USA
Color
Greenish, Blue, Colorless, White, Green
Colorless, Yellow, Green, Violet, White, Blue, Red, pink
Streak
White
-
For which Rashi?
-
Pisces, Taurus, Gemini, Libra
Planet
-
Saturn
Element of Planets
-
Water
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
Apollo
Not to wear with
-
-
Powers
-
Psychic Power
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
insoluble
Durability
-
-
Specific Gravity
3.08-3.123.95-4.03
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Uneven
Cleavage
{010} Perfect
None, but may exhibit parting
Mohs Hardness
7.59
2
10
👆🏻
Chemical Composition
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2 O 3
Luster
Vitreous
Vitreous, Adamantine
Pleochroism
Weak: colorless-(greenish) yellow
Strong
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
-
Transparent, Translucent, Transparent to opaque
Refractive Index
1.650-1.6771.762-1.788
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
Trigonal
Birefringence
0.019-0.0250.008-0.009
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent