Origin
Southern and central Africa
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Color
Red, Brown, Red, Red, Black
Blue, Green, Brownish, Greenish, Colorless, gray
Streak
Brownish, Red, Brownish, Red
White
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
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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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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
5.85-6.15
3.20-3.26
Fracture
Conchoidal, Metallic, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Splintery
Cleavage
Fair in four directions forming octahedrons
{010} perfect
Mohs Hardness
3.5-4
6-7.5
Chemical Composition
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Adamantine
Vitreous, Subadamantine, Silky
Pleochroism
visible
Colourless to pale brown to yellow
Dispersion
Not Available
Not Available
Transparency
TranslucentWalter Schumann
Transparent, Translucent
Refractive Index
2.849
1.653-1.685
Optic Character
Not Available
Not Available
Crystal System
cubic
Orthorhombic
Birefringence
Not Available
0.020-0.022
Clarity
TranslucentWalter Schumann
Transparent
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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Cuprite Vs Sillimanite Fracture
Fracture is an important parameter when you compare Cuprite and Sillimanite Physical Properties. It is necessary to understand the significance of these properties, before you compare Cuprite Vs Sillimanite 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. Sillimanite fracture is Splintery.
Cuprite Vs Sillimanite Luster
A primary knowledge about Cuprite vs Sillimanite 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. Sillimanite, on other hand, exhibits Silky, Subadamantine and Vitreous luster.