Origin
China, Canada
Ethiopia, Afghanistan, China, Australia, Origins: Brazil (major source); also found in USA, Germany, France, UK, Finland, Norway, Sweden, Namibia, Zaire, China and Australia.
Color
Green, Yellow, Brown, White, gray, Black
Brown, Green, White, Colorless, Yellow, Blue, gray, pink, Greenish
Specific Gravity
2.90-3.10
2.98-3.10
Fracture
Splintery, Granular
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Cleavage
None
[100] Perfect, [110] Good, [011] Distinct
Chemical Composition
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Vitreous, Greasy
Vitreous, Pearly
Pleochroism
None
weak to none
Transparency
Translucent
-
Refractive Index
1.600-1.627
1.578-1.646
Optic Character
-
Biaxial/+
Crystal System
monoclinic
Triclinic
Birefringence
0.027
0.020-0.030
Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
Aids in mental clarity and focus
Enhances mental clarity and focus
Respiratory
Good
Excellent
Reproductive
-
Supports reproductive health
Psychology
Emotional Balance
Peace
Healing
Physical healing
Emotional healing
Qualities Associated
Healing
Peace
Nephrite Vs Amblygonite Fracture
Fracture is an important parameter when you compare Nephrite and Amblygonite Physical Properties. It is necessary to understand the significance of these properties, before you compare Nephrite 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 Nephrite is Splintery and Granular. Amblygonite fracture is Sub-Conchoidal, Irregular/uneven, Uneven and Conchoidal.
Nephrite Vs Amblygonite Luster
A primary knowledge about Nephrite 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. Nephrite exhibits Vitreous and Greasy luster. Amblygonite, on other hand, exhibits Vitreous and Pearly luster.