Nepheline Vs Poldervaartite
Origin
Canada
Southern and central Africa
Color
White, Reddish, gray, Brown, Brownish
Colorless, White
For which Rashi?
Not Available
Not Available
Planet
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Element of Planets
Not Available
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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
Not Available
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Durability
Not Available
Not Available
Specific Gravity
2.55-2.65
2.91
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Handbook of mineralogy (2001)
Cleavage
[1010] Poor
None
Mohs Hardness
5-6
Not Available
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)
Luster
Vitreous, Greasy
Vitreous
Pleochroism
Not Available
Weak: colorless light gray bluish grayAnthony et al
Dispersion
Not Available
Not Available
Transparency
Transparent, Translucent
Transparent
Refractive Index
1.529-1.547
1.634-1.656
Optic Character
Not Available
Not Available
Crystal System
Hexagonal
Not Available
Birefringence
0.003-0.004
Not Available
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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Nepheline Vs Poldervaartite Fracture
Fracture is an important parameter when you compare Nepheline and Poldervaartite Physical Properties. It is necessary to understand the significance of these properties, before you compare Nepheline Vs Poldervaartite 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 Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Subconchoidal. Poldervaartite fracture is Handbook of mineralogy (2001).
Nepheline Vs Poldervaartite Luster
A primary knowledge about Nepheline vs Poldervaartite 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 Greasy and Vitreous luster. Poldervaartite, on other hand, exhibits Vitreous luster.