Taaffeite Vs Covellite
Origin
Tanzania, Sri Lanka, China
Mexico
Color
Colorless
Blue, Blue, Black
Streak
White
Grey, Black, gray
For which Rashi?
Not Available
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Planet
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Element of Planets
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Finger
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Ring Metal
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Energy
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Deities
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Not to wear with
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Powers
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Planetary
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Talisman
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Tenacity
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Flexible
Solubility
Not Available
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Durability
Not Available
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Specific Gravity
3.60-3.61
4.6-4.76
Fracture
Conchoidal
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Cleavage
Imperfect/fair/absent
Perfect on {0001}
Mohs Hardness
8-8.5
Not Available
Chemical Composition
Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Transparency
Gemmological Tables (2004) More from other references
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
Refractive Index
1.70-1.73
1.45-2.62
Optic Character
Not Available
Not Available
Crystal System
Hexagonal
Hexagonal
Birefringence
0.055
Not Available
Clarity
Color grading system
OpaqueAnthony et al
Neurological
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Cardiovascular
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Respiratory
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Reproductive
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Digestive
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Psychology
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Healing
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Qualities Associated
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Taaffeite Vs Covellite Fracture
Fracture is an important parameter when you compare Taaffeite and Covellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Taaffeite 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 Taaffeite is Conchoidal. Covellite fracture is Brittle, Gemstones (2009), Gemstones (2009), Metallic and UnevenArthur Thomas.
Taaffeite Vs Covellite Luster
A primary knowledge about Taaffeite 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. Taaffeite exhibits Vitreous luster. Covellite, on other hand, exhibits Resinous luster.