Origin
Southern and central Africa
Sri Lanka
Color
Colorless, Brown, Greenish, 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
Not Available
Element of Planets
Not Available
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Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
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Deities
Not Available
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Not to wear with
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Powers
Not Available
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Planetary
Not Available
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Talisman
Not Available
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Tenacity
Not Available
Brittle
Solubility
Not Available
insoluble
Durability
Not Available
Not Available
Specific Gravity
2.62-2.67
6.86-7.03
Fracture
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
Cleavage
From the Greek, oligos and kasein, little cleavage.
{100} imperfect, {110} indistinct; partings on {111} or {011}
Chemical Composition
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Adamantine, Greasy
Pleochroism
Not Available
Pleochroic haloes have been observed. Dichroic in yellow
Transparency
Gemmological Tables (2004)
Transparent, Translucent
Refractive Index
1.538-1.550
1.990-2.105
Optic Character
Not Available
Not Available
Crystal System
Not Available
tetragonal
Birefringence
0.010
0.096-0.098
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Neurological
Not Available
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Cardiovascular
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Respiratory
Not Available
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
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Healing
Not Available
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Qualities Associated
Not Available
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Oligoclase Vs Cassiterite Fracture
Fracture is an important parameter when you compare Oligoclase and Cassiterite Physical Properties. It is necessary to understand the significance of these properties, before you compare Oligoclase 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 Oligoclase is Gems, Gems, Sixth Edition (2006), Sixth Edition (2006) and Uneven. Cassiterite fracture is ConchoidalArthur Thomas, Gemstones (2009), Irregular, Subconchoidal and Uneven.
Oligoclase Vs Cassiterite Luster
A primary knowledge about Oligoclase 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. Oligoclase exhibits Vitreous luster. Cassiterite, on other hand, exhibits Adamantine and Greasy luster.