Origin
Southern and central Africa
Italy, China
Color
Colorless, White, Yellow, Blue, Green, gray
Colorless, White, Blue, gray
Streak
White
White
For which Rashi?
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-
Planet
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-
Element of Planets
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-
Energy
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How to Wear?
Finger
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Ring Metal
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Deities
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Not to wear with
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Powers
-
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Birthstone
Planetary
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Talisman
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-
Tenacity
Brittle
Brittle
Solubility
Soluble
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Durability
-
-
Specific Gravity
2.95-2.963.09
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
None
Perfect on {100} and {010}, imperfect on {101}
Mohs Hardness
7-7.58
2
10
👆🏻
Chemical Composition
Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaAl2Si2O7(OH)2.H2O
Luster
Vitreous, Adamantine
Vitreous, Greasy
Pleochroism
None
Weak
Dispersion
-0.01
0.005
1
👆🏻
Transparency
Transparent
-
Refractive Index
1.658-1.6731.672-1.676
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
Orthorhombic
Birefringence
0.010-0.0110.019-0.021
0
0.296
👆🏻
Clarity
Transparent
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Physical
Neurological
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Cardiovascular
Supports heart health
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Respiratory
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Good
Reproductive
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Digestive
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Psychology
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Healing
Emotional healing
Emotional healing
Qualities Associated
Peace
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