Vishnevite Vs Foitite
Origin
Not Available
Not Available, Southern and central Africa
Color
Colorless, Blue, White, Yellow, gray
Violet, Black
Streak
White
gray, White, gray, White
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
Not Available
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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
Not Available
3.17
Fracture
Brittle, Uneven
Handbook of mineralogy (2001)
Chemical Composition
Not Available
Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous, Pearly
Vitreous
Pleochroism
Not Available
Strong: pale lavender dark blueAnthony et al
Dispersion
Not Available
Not Available
Transparency
Not Available
TranslucentAnthony et al, Translucent
Refractive Index
1.490-1.507
Not Available
Optic Character
Not Available
Not Available
Crystal System
Hexagonal
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
0.002-0.012
Not Available
Clarity
Not Available
TranslucentAnthony et al
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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Vishnevite Vs Foitite Fracture
Fracture is an important parameter when you compare Vishnevite and Foitite Physical Properties. It is necessary to understand the significance of these properties, before you compare Vishnevite Vs Foitite 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 Vishnevite is Brittle and Uneven. Foitite fracture is Handbook of mineralogy (2001).
Vishnevite Vs Foitite Luster
A primary knowledge about Vishnevite vs Foitite 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. Vishnevite exhibits Pearly and Vitreous luster. Foitite, on other hand, exhibits Vitreous luster.