Nepheline Vs Williamsite
Origin
Canada
Southern and central Africa
Color
White, Reddish, gray, Brown, Brownish
Green
Streak
White
Not Available
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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Energy
Not Available
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Finger
Not Available
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Ring Metal
Not Available
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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
Not Available
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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
2.55-2.65
2.51-2.63
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Conchoidal, Conchoidal, Handbook of mineralogy (2001)
Cleavage
[1010] Poor
Not Available
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous, Greasy
Waxy, Silky, Resinous, Greasy
Pleochroism
Not Available
Not Available
Dispersion
Not Available
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Transparency
Transparent, Translucent
TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Refractive Index
1.529-1.547
1.530-1.575
Optic Character
Not Available
Not Available
Crystal System
Hexagonal
Not Available
Birefringence
0.003-0.004
Not Available
Clarity
Transparent
TranslucentHerve Nicolas Lazzarelli
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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Nepheline Vs Williamsite Fracture
Fracture is an important parameter when you compare Nepheline and Williamsite Physical Properties. It is necessary to understand the significance of these properties, before you compare Nepheline Vs Williamsite 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 Nepheline is Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal and Brittle. Williamsite fracture is Conchoidal, Conchoidal and Handbook of mineralogy (2001).
Nepheline Vs Williamsite Luster
A primary knowledge about Nepheline vs Williamsite 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. Nepheline exhibits Vitreous and Greasy luster. Williamsite, on other hand, exhibits Waxy, Silky, Resinous and Greasy luster.
