Spinel Vs Covellite
Origin
Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
Mexico
Color
Blue, Violet, Colorless, Red, Green, Brown
Blue, Blue, Black
Streak
White
Grey, Black, gray
For which Rashi?
Sagittarius, Scorpio, Sagittarius, Scorpio, Sagittarius, Scorpio
Not Available
Planet
Pluto
Not Available
Element of Planets
Not Available
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Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Projective
Not Available
Deities
Hephaestus
Not Available
Not to wear with
Not Available
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Powers
Money
Not Available
Planetary
Not Available
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Talisman
Not Available
Not Available
Tenacity
Not Available
Flexible
Solubility
none
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.64-3.66
4.6-4.76
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Cleavage
None, but may exhibit slight parting
Perfect on {0001}
Mohs Hardness
8
Not Available
Chemical Composition
MgAl2O4
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Pleochroism
Absent
Marked
Transparency
Transparent, Translucent, Transparent to translucent
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
Refractive Index
1.73
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
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Cardiovascular
Not Available
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Respiratory
Not Available
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
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Healing
Not Available
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Qualities Associated
Not Available
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Spinel Vs Covellite Fracture
Fracture is an important parameter when you compare Spinel and Covellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Spinel 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 Spinel is Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Uneven. Covellite fracture is Brittle, Gemstones (2009), Gemstones (2009), Metallic and UnevenArthur Thomas.
Spinel Vs Covellite Luster
A primary knowledge about Spinel 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. Spinel exhibits Vitreous luster. Covellite, on other hand, exhibits Resinous luster.