Sardonyx Vs Covellite
Origin
Southern and central Africa
Mexico
Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Blue, Blue, Black
Streak
Not Available
Grey, Black, gray
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
Not Available
Deities
Not Available
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Not to wear with
Not Available
Not Available
Powers
Not Available
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
2.55-2.70
4.6-4.76
Fracture
Not Available
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Cleavage
Not Available
Perfect on {0001}
Mohs Hardness
6.5-7
Not Available
Chemical Composition
SiO 2Ulrich Henn and Claudio C.
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Not Available
Resinous
Pleochroism
Not Available
Marked
Dispersion
Not Available
Not Available
Transparency
Translucent
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
Refractive Index
1.530-1.543
1.45-2.62
Optic Character
Not Available
Not Available
Crystal System
Not Available
Hexagonal
Birefringence
0.008-0.010
Not Available
Clarity
Translucent
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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Sardonyx Vs Covellite Fracture
Fracture is an important parameter when you compare Sardonyx and Covellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sardonyx 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. Covellite fracture is Brittle, Gemstones (2009), Gemstones (2009), Metallic and UnevenArthur Thomas.
Sardonyx Vs Covellite Luster
A primary knowledge about Sardonyx 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. Covellite, on other hand, exhibits Resinous luster.