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