Origin
Ethiopia, Afghanistan, China, Australia, Origins: Brazil (major source); also found in USA, Germany, France, UK, Finland, Norway, Sweden, Namibia, Zaire, China and Australia.
-
Color
Brown, Green, White, Colorless, Yellow, Blue, gray, pink, Greenish
Blue, White, Grey, Yellow, Green, Colorless, Red, gray
Solubility
-
Gelatinises in acids
Specific Gravity
2.98-3.10
2.4-2.5
Fracture
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Uneven, Conchoidal
Cleavage
[100] Perfect, [110] Good, [011] Distinct
Distinct on {110}
Chemical Composition
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2
Luster
Vitreous, Pearly
Vitreous, Greasy
Pleochroism
weak to none
None
Refractive Index
1.578-1.646
1.50
Optic Character
Biaxial/+
-
Crystal System
Triclinic
Isometric
Birefringence
0.020-0.030
-9999
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
-
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Respiratory
Excellent
Good
Reproductive
Supports reproductive health
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Psychology
Peace
Communication
Healing
Emotional healing
Emotional healing
Qualities Associated
Peace
Communication