Origin
Southern and central Africa
Sri Lanka
Color
Yellow, Brown, Black, Black
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Brown, Brownish, Black, Colorless, Green, gray
Streak
White
White, Brownish, Brownish, White
For which Rashi?
Not Available
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Planet
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Element of Planets
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Finger
Not Available
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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
Brittle
Solubility
Not Available
insoluble
Durability
Not Available
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Specific Gravity
4.392
6.86-7.03
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
Cleavage
{010} moderate, {100} imperfect
{100} imperfect, {110} indistinct; partings on {111} or {011}
Chemical Composition
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Resinous
Adamantine, Greasy
Pleochroism
Faint
Pleochroic haloes have been observed. Dichroic in yellow
Transparency
TransparentAnthony et al, Handbook of mineralogy (2001)
Transparent, Translucent
Refractive Index
1.827-1.879
1.990-2.105
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
tetragonal
Birefringence
0.042-0.051
0.096-0.098
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 Cassiterite Fracture
Fracture is an important parameter when you compare Fayalite and Cassiterite Physical Properties. It is necessary to understand the significance of these properties, before you compare Fayalite Vs Cassiterite 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). Cassiterite fracture is ConchoidalArthur Thomas, Gemstones (2009), Irregular, Subconchoidal and Uneven.
Fayalite Vs Cassiterite Luster
A primary knowledge about Fayalite vs Cassiterite 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. Cassiterite, on other hand, exhibits Adamantine and Greasy luster.