Covellite Vs Common Opal
Origin
Mexico
Southern and central Africa
Color
Blue, Blue, Black
White, Colorless, Blue, Red, Green, Yellow, Violet
Streak
Grey, Black, gray
Not Available
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
Not Available
Not to wear with
Not Available
Not Available
Powers
Not Available
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Flexible
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.6-4.76
1.98-2.50
Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Conchoidal, Conchoidal, Gemstones of the world (2001)
Cleavage
Perfect on {0001}
Not Available
Mohs Hardness
Not Available
5.5-6.5
Chemical Composition
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Luster
Resinous
Not Available
Pleochroism
Marked
AbsentWalter Schumann
Dispersion
Not Available
None
Transparency
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
Translucent
Refractive Index
1.45-2.62
1.37-1.52
Optic Character
Not Available
Not Available
Crystal System
Hexagonal
Not Available
Birefringence
Not Available
Not Available
Clarity
OpaqueAnthony et al
Translucent
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
Respiratory
Not Available
Not Available
Reproductive
Not Available
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Digestive
Not Available
Not Available
Psychology
Not Available
Not Available
Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
Covellite Vs Common Opal Fracture
Fracture is an important parameter when you compare Covellite and Common Opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Covellite Vs Common Opal 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. Common Opal fracture is Conchoidal, Conchoidal and Gemstones of the world (2001).
Covellite Vs Common Opal Luster
A primary knowledge about Covellite vs Common Opal 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.