Gedrite Vs Foitite
Origin
Southern and central Africa
Southern and central Africa
Color
Brown, Green, gray, White
Violet, Black
Streak
gray, White
gray, White
Specific Gravity
3.15-3.259
3.17
Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
None
Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
Pleochroism
Weak to moderate
Strong: pale lavender dark blueAnthony et al
Transparency
Transparent
TranslucentAnthony et al, Translucent
Refractive Index
1.625-1.718
-9999
Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
-9999
-9999
Clarity
Transparent
TranslucentAnthony et al
Psychology
Focus
Empowerment
Healing
-
Emotional healing
Qualities Associated
Protection
Emotional Healing
Gedrite Vs Foitite Fracture
Fracture is an important parameter when you compare Gedrite and Foitite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gedrite Vs Foitite 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.
Gedrite Vs Foitite Luster
A primary knowledge about Gedrite vs Foitite 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. Foitite, on other hand, exhibits Vitreous luster.