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
Black, Blue, Yellow, Green
Brown, Green, White, Colorless, Yellow, Blue, gray, pink, Greenish
Streak
Grey, Greenish, Brown
White
Specific Gravity
3.28-3.44
2.98-3.10
Fracture
Uneven, Splintery
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Cleavage
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
[100] Perfect, [110] Good, [011] Distinct
Chemical Composition
Na2Fe2+3Fe3+2Si8O22(OH)2
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Vitreous, Silky
Vitreous, Pearly
Pleochroism
X = blue
weak to none
Refractive Index
1.680-1.698
1.578-1.646
Optic Character
-
Biaxial/+
Crystal System
monoclinic
Triclinic
Birefringence
0.005-0.008
0.020-0.030
Clarity
-
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
Supports heart health
-
Respiratory
Good
Excellent
Reproductive
-
Supports reproductive health
Psychology
Empowerment
Peace
Healing
Emotional healing
Emotional healing
Qualities Associated
Clear Thinking
Peace
Riebeckite Vs Amblygonite Fracture
Fracture is an important parameter when you compare Riebeckite and Amblygonite Physical Properties. It is necessary to understand the significance of these properties, before you compare Riebeckite 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 Riebeckite is Uneven and Splintery. Amblygonite fracture is Sub-Conchoidal, Irregular/uneven, Uneven and Conchoidal.
Riebeckite Vs Amblygonite Luster
A primary knowledge about Riebeckite 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. Riebeckite exhibits Vitreous and Silky luster. Amblygonite, on other hand, exhibits Vitreous and Pearly luster.