Zoisite Vs Nephrite
Origin
Pakistan, Tanzania
China, Canada
Color
Brown, gray, Green, Blue, rose, Red
Green, Yellow, Brown, White, gray, Black
Streak
White, Colorless
-
Specific Gravity
3.20-3.50
2.90-3.10
Fracture
Uneven, Conchoidal, Even
Splintery, Granular
Cleavage
Perfect {010} imperfect {100}
None
Chemical Composition
Ca2Al3(SiO4)3(OH)
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Luster
Vitreous
Vitreous, Greasy
Pleochroism
X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green
None
Transparency
Transparent, Translucent, Opaque . May be translucent in thin backlit sections.
Translucent
Refractive Index
1.685-1.707
1.600-1.627
Crystal System
Orthorhombic
monoclinic
Birefringence
0.006-0.018
0.027
Clarity
Transparent
Translucent
Neurological
-
Aids in mental clarity and focus
Cardiovascular
Supports heart health
-
Respiratory
Excellent
Good
Reproductive
Supports reproductive health
-
Psychology
Transformation
Emotional Balance
Healing
Emotional healing
Physical healing
Qualities Associated
-
Healing
Zoisite Vs Nephrite Fracture
Fracture is an important parameter when you compare Zoisite and Nephrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Zoisite Vs Nephrite 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 Zoisite is Uneven, Conchoidal and Even. Nephrite fracture is Splintery and Granular.
Zoisite Vs Nephrite Luster
A primary knowledge about Zoisite vs Nephrite 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. Zoisite exhibits Vitreous luster. Nephrite, on other hand, exhibits Vitreous and Greasy luster.