Origin
Brazil, Southern and central Africa
Italy, China
Color
Blue, Green, Black
Colorless, White, Blue, gray
Streak
White
White
For which Rashi?
Gemini, Sagittarius
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Planet
Jupiter
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Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
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-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.04-3.173.09
1
7.18
👆🏻
Fracture
Uneven
Uneven
Cleavage
{001} Indistinct, {???} Indistinct
Perfect on {100} and {010}, imperfect on {101}
Mohs Hardness
5.58
2
10
👆🏻
Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
CaAl2Si2O7(OH)2.H2O
Luster
-
Vitreous, Greasy
Pleochroism
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
Weak
Dispersion
0.010.01
0.005
1
👆🏻
Transparency
Transparent, Translucent
-
Refractive Index
1.604-1.6461.672-1.676
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
Orthorhombic
Birefringence
0.031-0.0360.019-0.021
0
0.296
👆🏻
Clarity
Transparent
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Physical
Neurological
Balances digestive system and reduces bloating
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Cardiovascular
-
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Respiratory
Excellent
Good
Reproductive
-
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Digestive
Supports digestive health
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Psychology
Clarity
-
Healing
Emotional healing
Emotional healing
Qualities Associated
Psychic Abilities
-