Gedrite Vs Covellite
Origin
Southern and central Africa
Mexico
Color
Brown, Green, gray, White
Blue, Black
Streak
gray, White
Grey, Black, gray
Specific Gravity
3.15-3.259
4.6-4.76
Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Perfect on {0001}
Mohs Hardness
5.5-6
-9999
Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Pleochroism
Weak to moderate
Marked
Transparency
Transparent
OpaqueAnthony et al
Refractive Index
1.625-1.718
1.45-2.62
Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Hexagonal
Birefringence
-9999
-9999
Clarity
Transparent
OpaqueAnthony et al
Neurological
-
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Psychology
Focus
Transformation
Healing
-
Emotional healing
Qualities Associated
Protection
Manifestation
Gedrite Vs Covellite Fracture
Fracture is an important parameter when you compare Gedrite and Covellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gedrite Vs Covellite 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 Covellite Luster
A primary knowledge about Gedrite vs Covellite 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. Covellite, on other hand, exhibits Resinous luster.