Covellite Vs Nuummite
Origin
Mexico
Not Available
Color
Blue, Blue, Black
Green
Streak
Grey, Black, gray
Not Available
For which Rashi?
Not Available
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Planet
Not Available
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Element of Planets
Not Available
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Finger
Not Available
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Ring Metal
Not Available
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Energy
Not Available
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Deities
Not Available
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Not to wear with
Not Available
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Powers
Not Available
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Planetary
Not Available
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Talisman
Not Available
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Tenacity
Flexible
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.6-4.76
3.18-3.37
Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Conchoidal
Cleavage
Perfect on {0001}
Perfect on 210
Mohs Hardness
Not Available
5.5-6
Chemical Composition
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Not Available
Luster
Resinous
Not Available
Pleochroism
Marked
Not Available
Dispersion
Not Available
Not Available
Transparency
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
Gemmological Tables (2004) More from other references
Refractive Index
1.45-2.62
1.635-1.663
Optic Character
Not Available
Not Available
Crystal System
Hexagonal
Not Available
Birefringence
Not Available
0.0170-0.230
Clarity
OpaqueAnthony et al
Gemmological Tables (2004) More from other references
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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Covellite Vs Nuummite Fracture
Fracture is an important parameter when you compare Covellite and Nuummite Physical Properties. It is necessary to understand the significance of these properties, before you compare Covellite Vs Nuummite 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 Covellite is Brittle, Gemstones (2009), Gemstones (2009), Metallic and UnevenArthur Thomas. Nuummite fracture is Conchoidal.
Covellite Vs Nuummite Luster
A primary knowledge about Covellite vs Nuummite 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.