Fayalite Vs Nepheline
Origin
Southern and central Africa
Canada
Color
Yellow, Brown, Black, Black
White, Reddish, gray, Brown, Brownish
For which Rashi?
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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
4.392
2.55-2.65
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
{010} moderate, {100} imperfect
[1010] Poor
Chemical Composition
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Luster
Vitreous, Resinous
Vitreous, Greasy
Pleochroism
Faint
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Dispersion
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Transparency
TransparentAnthony et al, Handbook of mineralogy (2001)
Transparent, Translucent
Refractive Index
1.827-1.879
1.529-1.547
Optic Character
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Crystal System
Orthorhombic
Hexagonal
Birefringence
0.042-0.051
0.003-0.004
Clarity
TransparentAnthony et al
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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Fayalite Vs Nepheline Fracture
Fracture is an important parameter when you compare Fayalite and Nepheline Physical Properties. It is necessary to understand the significance of these properties, before you compare Fayalite 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 Fayalite is Brittle, Conchoidal, Conchoidal, ConchoidalAnthony et al and Handbook of mineralogy (2001). Nepheline fracture is Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Subconchoidal.
Fayalite Vs Nepheline Luster
A primary knowledge about Fayalite 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. Fayalite exhibits Resinous and Vitreous luster. Nepheline, on other hand, exhibits Greasy and Vitreous luster.