Origin
Ethiopia, Afghanistan, China, Australia, Origins: Brazil (major source); also found in USA, Germany, France, UK, Finland, Norway, Sweden, Namibia, Zaire, China and Australia.
USA
Color
Brown, Green, White, Colorless, Yellow, Blue, gray, pink, Greenish
Brown, Red, Black, Brownish
Streak
White
Reddish, Brown
Specific Gravity
2.98-3.10
5.05-5.22
Fracture
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Uneven
Cleavage
[100] Perfect, [110] Good, [011] Distinct
None
Chemical Composition
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous, Pearly
-
Pleochroism
weak to none
-
Transparency
-
Translucent
Refractive Index
1.578-1.646
-9999
Optic Character
Biaxial/+
-
Crystal System
Triclinic
Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m
Birefringence
0.020-0.030
-9999
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent
Neurological
Enhances mental clarity and focus
-
Reproductive
Supports reproductive health
-
Psychology
Peace
Creativity
Healing
Emotional healing
-
Qualities Associated
Peace
Grounding
Amblygonite Vs Franklinite Fracture
Fracture is an important parameter when you compare Amblygonite and Franklinite Physical Properties. It is necessary to understand the significance of these properties, before you compare Amblygonite Vs Franklinite fracture. Whenever a gemstone chip breaks, it leaves a characteristic line along its breakage. Such lines are known as fracture and are used to identify the gemstones in their initial stages of production when they are in the form of rough minerals. Fracture is usually described with the terms “fibrous” and “splintery” to denote a fracture that usually leaves elongated and sharp edges. Fracture observed in Amblygonite is Sub-Conchoidal, Irregular/uneven, Uneven and Conchoidal. Franklinite fracture is Uneven.
Amblygonite Vs Franklinite Luster
A primary knowledge about Amblygonite vs Franklinite luster is useful in apparent identifications of these gemstones. Luster is the measure of light that gets reflected when incident on a finished cut gemstone. There are two major types of lusters: Silky and Adamantine. Since luster varies between two crystals of even the same gemstone, luster is limited to basic identification criteria. Amblygonite exhibits Vitreous and Pearly luster.