Origin
Canada, USA, Brazil, Italy, Mozambique, Zimbabwe, Russia, Burma, Australia
Sri Lanka
Color
Colorless, gray, Yellow, White
Black, Brownish, Reddish, Brown, Red, Yellow, White, Colorless, Brown, Brownish, Black, Colorless, Green, gray
Streak
Colorless
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
Not Available
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Talisman
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Solubility
insoluble
insoluble
Durability
Not Available
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Specific Gravity
2.40
6.86-7.03
Fracture
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
Cleavage
Perfect on {001}, poor on {201} with 38.5° angle between the two
{100} imperfect, {110} indistinct; partings on {111} or {011}
Chemical Composition
LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Pearly
Adamantine, Greasy
Pleochroism
AbsentWalter Schumann
Pleochroic haloes have been observed. Dichroic in yellow
Transparency
Gemmological Tables (2004) More from other references
Transparent, Translucent
Refractive Index
1.502-1.523
1.990-2.105
Optic Character
Not Available
Not Available
Crystal System
monoclinic
tetragonal
Birefringence
0.012-0.016
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
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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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Petalite Vs Cassiterite Fracture
Fracture is an important parameter when you compare Petalite and Cassiterite Physical Properties. It is necessary to understand the significance of these properties, before you compare Petalite 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 Petalite is Brittle, Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references and Subconchoidal. Cassiterite fracture is ConchoidalArthur Thomas, Gemstones (2009), Irregular, Subconchoidal and Uneven.
Petalite Vs Cassiterite Luster
A primary knowledge about Petalite 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. Petalite exhibits Pearly and Vitreous luster. Cassiterite, on other hand, exhibits Adamantine and Greasy luster.