Ettringite Vs Nepheline
Origin
Southern and central Africa
Canada
Color
Colorless, Yellow, White, Colorless, White
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
Not Available
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Solubility
Partially soluble in water
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Durability
Not Available
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Specific Gravity
1.77
2.55-2.65
Fracture
Not Available
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Perfect on {10 1 0}
[1010] Poor
Chemical Composition
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Luster
Vitreous
Vitreous, Greasy
Pleochroism
Not Available
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Dispersion
Not Available
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Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.470-1.491
1.529-1.547
Optic Character
Not Available
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Crystal System
Trigonal
Hexagonal
Birefringence
0.021
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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Ettringite Vs Nepheline Fracture
Fracture is an important parameter when you compare Ettringite and Nepheline Physical Properties. It is necessary to understand the significance of these properties, before you compare Ettringite 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. Nepheline fracture is Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Subconchoidal.
Ettringite Vs Nepheline Luster
A primary knowledge about Ettringite 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. Ettringite exhibits Vitreous luster. Nepheline, on other hand, exhibits Greasy and Vitreous luster.