Origin
Brazil, Southern and central Africa
USA
Color
Blue, Green, Black
Yellow, Red, Green, Colorless, orange
Streak
White
Yellow, yellowish orange
For which Rashi?
Gemini, Sagittarius
-
Planet
Jupiter
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Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.04-3.175.50-5.90
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
{001} Indistinct, {???} Indistinct
On {10 1 0}, perfect; parting on {000 1 }
Mohs Hardness
5.54
2
10
👆🏻
Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
Luster
-
Subadamantine, Resinous
Pleochroism
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
Very weak
Dispersion
0.010.16
0.005
1
👆🏻
Transparency
Transparent, Translucent
TransparentRobert C. Kammerling
Refractive Index
1.604-1.6462.013-2.029
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
Hexagonal
Birefringence
0.031-0.0360.016
0
0.296
👆🏻
Clarity
Transparent
TransparentRobert C. Kammerling
Physical
Neurological
Balances digestive system and reduces bloating
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Cardiovascular
-
-
Respiratory
Excellent
Good
Reproductive
-
-
Digestive
Supports digestive health
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Psychology
Clarity
Passion
Healing
Emotional healing
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Qualities Associated
Psychic Abilities
-