Cuprite Vs Black Opal
Origin
Southern and central Africa
Australia
Color
Red, Brown, Red, Red, Black
White, Colorless, Blue, Red, Green, Yellow, Violet
Streak
Brownish, Red, Brownish, Red
Not Available
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
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Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
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
Not Available
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
5.85-6.15
1.97-2.22
Fracture
Conchoidal, Metallic, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Fair in four directions forming octahedrons
Not Available
Mohs Hardness
3.5-4
6-6.5
Chemical Composition
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO 2 + H 2OUlrich Henn and Claudio C.
Luster
Adamantine
Not Available
Pleochroism
visible
AbsentWalter Schumann
Dispersion
Not Available
None
Transparency
TranslucentWalter Schumann
Transparent, Translucent
Refractive Index
2.849
1.370-1.470
Optic Character
Not Available
Not Available
Crystal System
cubic
Not Available
Birefringence
Not Available
Not Available
Clarity
TranslucentWalter Schumann
Transparent
Neurological
Not Available
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Cardiovascular
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Respiratory
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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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Cuprite Vs Black Opal Fracture
Fracture is an important parameter when you compare Cuprite and Black Opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Cuprite Vs Black 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 Cuprite is Brittle, Conchoidal, Conchoidal, Gemstones (2009), Metallic and UnevenArthur Thomas. Black Opal fracture is ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009) and Gemstones (2009).
Cuprite Vs Black Opal Luster
A primary knowledge about Cuprite vs Black 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. Cuprite exhibits Adamantine luster.