Gahnospinel Vs Covellite
Streak
Not Available
Grey, Black, gray
For which Rashi?
Sagittarius, Scorpio
Not Available
Planet
Pluto
Not Available
Element of Planets
Not Available
Not Available
Energy
Projective
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Deities
Hephaestus
Not Available
Not to wear with
Not Available
Not Available
Powers
Money
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Flexible
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.65-4.55
4.6-4.76
Fracture
ConchoidalArthur Thomas, Gemstones (2009)
Gemstones (2009), UnevenArthur Thomas, Brittle, Metallic
Cleavage
None, but may exhibit slight parting
Perfect on {0001}
Mohs Hardness
7.5-8
Not Available
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Pleochroism
AbsentWalter Schumann
Marked
Dispersion
Not Available
Not Available
Transparency
Gemmological Tables (2004)
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
Refractive Index
1.735-1.790
1.45-2.62
Optic Character
Not Available
Not Available
Crystal System
Isometric
Hexagonal
Birefringence
Not Available
Not Available
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
OpaqueAnthony et al
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
Respiratory
Not Available
Not Available
Reproductive
Not Available
Not Available
Digestive
Not Available
Not Available
Psychology
Not Available
Not Available
Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
Gahnospinel Vs Covellite Fracture
Fracture is an important parameter when you compare Gahnospinel and Covellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Gahnospinel 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. Fracture observed in Gahnospinel is ConchoidalArthur Thomas and Gemstones (2009). Covellite fracture is Gemstones (2009), UnevenArthur Thomas, Brittle and Metallic.
Gahnospinel Vs Covellite Luster
A primary knowledge about Gahnospinel 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. Gahnospinel exhibits Vitreous luster. Covellite, on other hand, exhibits Resinous luster.