Gahnite Vs Gedrite
Origin
Australia
Southern and central Africa
Color
Blue, Green, Greenish, Black
Brown, Green, gray, White
Streak
Grey, gray
gray, White
Specific Gravity
4.00-4.62
3.15-3.259
Fracture
Conchoidal, Uneven
-
Cleavage
Indistinct parting on [111]
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Mohs Hardness
7.5-8
5.5-6
Chemical Composition
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Pleochroism
-
Weak to moderate
Transparency
-
Transparent
Refractive Index
1.790-1.818
1.625-1.718
Crystal System
cubic
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Birefringence
-9999
-9999
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Neurological
Enhances mental clarity and focus
-
Respiratory
Aids in digestion and soothes the stomach
-
Psychology
Protection
Focus
Healing
Emotional healing
-
Qualities Associated
Harmony
Protection
Gahnite Vs Gedrite Fracture
Fracture is an important parameter when you compare Gahnite and Gedrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gahnite 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. Fracture observed in Gahnite is Conchoidal and Uneven.
Gahnite Vs Gedrite Luster
A primary knowledge about Gahnite 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. Gahnite exhibits Vitreous luster. Gedrite, on other hand, exhibits Vitreous luster.