Origin
Southern and central Africa
Colombia, Zambia, Brazil, Madagascar, Southern and central Africa, Zimbabwe, Russia, India, Pakistan, Australia, USA, Mexico, Spain
Color
White, Colorless, Blue, Red, Green, Yellow, Violet, Black
Green, Blue, Yellow, Grey
Streak
Colorless
White
For which Rashi?
-
Taurus, Gemini, Aries
Planet
-
Venus, Mercury
Element of Planets
-
Earth
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
Gold
Deities
-
Diana, Artemis, Venus, Freyja
Not to wear with
-
Red Coral, Natural Pearl, Moonstone, Ruby
Powers
-
Protection, Love, Courage
Birthstone
Planetary
-
Taurus
Talisman
-
Gemini
Tenacity
-
-
Solubility
-
-
Durability
-
Hard
Specific Gravity
3.03-3.182.67-2.78
1
7.18
👆🏻
Fracture
Uneven, Irregular, Conchoidal
Uneven, ConchoidalWalter Schumann
Cleavage
{???} Indistinct
Imperfect on the [0001]
Mohs Hardness
7-7.57.5-8
2
10
👆🏻
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Be3Al2SiO6
Luster
Vitreous
Vitreous
Pleochroism
Very strong: pale yellow colorless
Strong dichroism: yellow green Lazzarelli
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
Transparent
Transparent, Translucent, Transparent to translucent
Refractive Index
1.614-1.6661.565-1.602
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Hexagonal
Birefringence
0.014-0.0320.0040-0.0070
0
0.296
👆🏻
Clarity
Transparent
-