Origin
Italy, Canada
Sri Lanka
Color
Blue, Red, Yellow, Colorless, Green, White
Blue
Streak
White
-
For which Rashi?
-
-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
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Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.90-3.103.91-4.73
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Conchoidal
Cleavage
Poor/indistinct on {1120} and {1011}
None
Mohs Hardness
76.5-7.5
2
10
👆🏻
Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous
-
Pleochroism
Pale green
-
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Transparent
Transparent
Refractive Index
1.614-1.6661.790-2.015
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Trigonal
-
Birefringence
0.014-0.0320.005-0.055
0
0.296
👆🏻
Clarity
Transparent
Transparent
Physical
Neurological
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Cardiovascular
-
-
Respiratory
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Good
Reproductive
-
-
Digestive
-
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Psychology
Emotional healing
Hope
Healing
Emotional healing
Emotional healing
Qualities Associated
Emotional Healing
Hope