Vivianite Vs Gedrite
Origin
Southern and central Africa
Southern and central Africa
Color
Blue, Green, Colorless
Brown, Green, gray, White
Specific Gravity
2.64-2.70
3.15-3.259
Cleavage
{010} Perfect
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Mohs Hardness
-9999
5.5-6
Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous, Pearly
Vitreous
Pleochroism
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael OâDonoghue
Weak to moderate
Transparency
Transparent
Transparent
Refractive Index
1.560-1.640
1.625-1.718
Crystal System
-
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Birefringence
0.054-0.075
-9999
Clarity
Transparent
Transparent
Neurological
Enhances mental clarity and focus
-
Healing
Emotional healing
-
Qualities Associated
Transformation
Protection
Vivianite Vs Gedrite Fracture
Fracture is an important parameter when you compare Vivianite and Gedrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Vivianite Vs Gedrite 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.
Vivianite Vs Gedrite Luster
A primary knowledge about Vivianite vs Gedrite 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. Vivianite exhibits Vitreous and Pearly luster. Gedrite, on other hand, exhibits Vitreous luster.