Origin
Southern and central Africa
Italy, China
Color
Blue, Colorless, White
Colorless, White, Blue, gray
Streak
White
White
For which Rashi?
Gemini, Virgo
-
Planet
-
-
Element of Planets
Earth
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Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
Quan Yin
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Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.45-2.583.09
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
None
Perfect on {100} and {010}, imperfect on {101}
Mohs Hardness
3-3.58
2
10
👆🏻
Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaAl2Si2O7(OH)2.H2O
Luster
Vitreous
Vitreous, Greasy
Pleochroism
-
Weak
Dispersion
0.010.01
0.005
1
👆🏻
Transparency
-
-
Refractive Index
1.583-1.6081.672-1.676
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
Orthorhombic
Birefringence
0.0190.019-0.021
0
0.296
👆🏻
Clarity
-
-
Physical
Neurological
Aids in mental clarity and focus
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Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Calming
-
Healing
Emotional healing
Emotional healing
Qualities Associated
Calming
-