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