Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Sri Lanka
Color
Blue, Green, Brownish, Greenish, Colorless, gray
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
Not Available
Planet
Not Available
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Element of Planets
Not Available
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Finger
Not Available
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Ring Metal
Not Available
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Energy
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
Not Available
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Solubility
Not Available
insoluble
Durability
Not Available
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Specific Gravity
3.20-3.26
6.86-7.03
Fracture
Splintery
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
Cleavage
{010} perfect
{100} imperfect, {110} indistinct; partings on {111} or {011}
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Subadamantine, Silky
Adamantine, Greasy
Pleochroism
Colourless to pale brown to yellow
Pleochroic haloes have been observed. Dichroic in yellow
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.653-1.685
1.990-2.105
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
tetragonal
Birefringence
0.020-0.022
0.096-0.098
Clarity
Transparent
Transparent
Neurological
Not Available
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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
Not Available
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Sillimanite Vs Cassiterite Fracture
Fracture is an important parameter when you compare Sillimanite and Cassiterite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite 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 Sillimanite is Splintery. Cassiterite fracture is ConchoidalArthur Thomas, Gemstones (2009), Irregular, Subconchoidal and Uneven.
Sillimanite Vs Cassiterite Luster
A primary knowledge about Sillimanite 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. Sillimanite exhibits Silky, Subadamantine and Vitreous luster. Cassiterite, on other hand, exhibits Adamantine and Greasy luster.