Origin
Canada, Southern and central Africa, Australia
Ethiopia, Afghanistan, China, Australia, Origins: Brazil (major source); also found in USA, Germany, France, UK, Finland, Norway, Sweden, Namibia, Zaire, China and Australia.
Color
Colorless, White, gray
Brown, Green, White, Colorless, Yellow, Blue, gray, pink, Greenish
Specific Gravity
2.72-2.75
2.98-3.10
Fracture
Uneven
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Cleavage
Perfect on [001], good on [010], imperfect on [110]
[100] Perfect, [110] Good, [011] Distinct
Chemical Composition
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Vitreous, Pearly
Vitreous, Pearly
Pleochroism
colorless.
weak to none
Transparency
Transparent
-
Refractive Index
1.561-1.583
1.578-1.646
Optic Character
-
Biaxial/+
Crystal System
Triclinic
Triclinic
Birefringence
0.010-0.011
0.020-0.030
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
-
Enhances mental clarity and focus
Respiratory
Poor
Excellent
Reproductive
-
Supports reproductive health
Healing
Emotional healing
Emotional healing
Qualities Associated
Clarity
Peace
Bytownite Vs Amblygonite Fracture
Fracture is an important parameter when you compare Bytownite and Amblygonite Physical Properties. It is necessary to understand the significance of these properties, before you compare Bytownite Vs Amblygonite 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 Bytownite is Uneven. Amblygonite fracture is Sub-Conchoidal, Irregular/uneven, Uneven and Conchoidal.
Bytownite Vs Amblygonite Luster
A primary knowledge about Bytownite vs Amblygonite 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. Bytownite exhibits Vitreous and Pearly luster. Amblygonite, on other hand, exhibits Vitreous and Pearly luster.