Gedrite Vs Nephrite
Origin
Southern and central Africa
China, Canada
Color
Brown, Green, gray, White
Green, Yellow, Brown, White, gray, Black
Specific Gravity
3.15-3.259
2.90-3.10
Fracture
-
Splintery, Granular
Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
None
Mohs Hardness
5.5-6
6-6.5
Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Luster
Vitreous
Vitreous, Greasy
Pleochroism
Weak to moderate
None
Transparency
Transparent
Translucent
Refractive Index
1.625-1.718
1.600-1.627
Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
monoclinic
Birefringence
-9999
0.027
Clarity
Transparent
Translucent
Neurological
-
Aids in mental clarity and focus
Psychology
Focus
Emotional Balance
Healing
-
Physical healing
Qualities Associated
Protection
Healing
Gedrite Vs Nephrite Fracture
Fracture is an important parameter when you compare Gedrite and Nephrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gedrite 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. Nephrite fracture is Splintery and Granular.
Gedrite Vs Nephrite Luster
A primary knowledge about Gedrite 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. Gedrite exhibits Vitreous luster. Nephrite, on other hand, exhibits Vitreous and Greasy luster.