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
White, Colorless, Blue, Red, Green, Yellow, Violet
Specific Gravity
2.98-3.10
3.00-3.25
Fracture
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
-
Cleavage
[100] Perfect, [110] Good, [011] Distinct
Perfect
Chemical Composition
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous, Pearly
-
Pleochroism
weak to none
-
Transparency
-
Transparent
Refractive Index
1.578-1.646
1.432-1.436
Optic Character
Biaxial/+
-
Crystal System
Triclinic
-
Birefringence
0.020-0.030
-9999
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Respiratory
Excellent
Excellent
Reproductive
Supports reproductive health
-
Healing
Emotional healing
Emotional healing
Qualities Associated
Peace
Mental Clarity
Amblygonite Vs Blue John Fracture
Fracture is an important parameter when you compare Amblygonite and Blue John Physical Properties. It is necessary to understand the significance of these properties, before you compare Amblygonite Vs Blue John 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.
Amblygonite Vs Blue John Luster
A primary knowledge about Amblygonite vs Blue John 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.