Powellite Vs Nepheline
Color
Yellow, Greenish, Blue, Brown, Green, gray
White, Reddish, gray, Brown, Brownish
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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Solubility
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Durability
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Specific Gravity
4.23
2.55-2.65
Fracture
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
{111} Distinct
[1010] Poor
Chemical Composition
CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Luster
Greasy, Subadamantine
Vitreous, Greasy
Pleochroism
In deeply colored specimens: blue greenAnthony et al
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Dispersion
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Transparency
Transparent
Transparent, Translucent
Refractive Index
1.974-1.984
1.529-1.547
Optic Character
Not Available
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Crystal System
Not Available
Hexagonal
Birefringence
Not Available
0.003-0.004
Clarity
Transparent
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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Powellite Vs Nepheline Fracture
Fracture is an important parameter when you compare Powellite and Nepheline Physical Properties. It is necessary to understand the significance of these properties, before you compare Powellite Vs Nepheline 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 Powellite is Brittle, Conchoidal, Handbook of mineralogy (2001), Handbook of mineralogy (2001), UnevenAnthony et al and UnevenAnthony et al. Nepheline fracture is Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Subconchoidal.
Powellite Vs Nepheline Luster
A primary knowledge about Powellite vs Nepheline 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. Powellite exhibits Greasy and Subadamantine luster. Nepheline, on other hand, exhibits Greasy and Vitreous luster.