Origin
Austria, Spain, Russia, Canada, Australia
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
Color
Colorless, Brownish, Yellow, Green, gray, White
Blue, Violet, Greenish, Brown, Colorless, Colorless, Blue, Violet, Yellow, gray
For which Rashi?
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Planet
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Element of Planets
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Finger
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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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Solubility
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Durability
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Specific Gravity
3.7-3.9
2.57-2.66
Fracture
Conchoidal, Brittle
Subconchoidal, Conchoidal, Brittle
Cleavage
{001} perfect; {111} imperfect, may exhibit parting on , {011}
Fair on {100}, poor on {001} and {010}
Mohs Hardness
5.5-6
7-7.5
Chemical Composition
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
Mg2Al4Si5O18
Luster
Vitreous
Greasy, Vitreous
Pleochroism
Not Available
X = pale yellow
Dispersion
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Transparency
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
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Refractive Index
1.735-1.738
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Optic Character
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Crystal System
Isometric
Orthorhombic
Birefringence
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Clarity
TransparentWalter Schumann
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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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Periclase Vs Cordierite Fracture
Fracture is an important parameter when you compare Periclase and Cordierite Physical Properties. It is necessary to understand the significance of these properties, before you compare Periclase Vs Cordierite 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 Periclase is Brittle and Conchoidal. Cordierite fracture is Brittle, Conchoidal and Subconchoidal.
Periclase Vs Cordierite Luster
A primary knowledge about Periclase vs Cordierite 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. Periclase exhibits Vitreous luster. Cordierite, on other hand, exhibits Greasy and Vitreous luster.