Staurolite Vs Cordierite
Origin
Switzerland
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
Color
Brown, Brownish, Yellow, Black, Reddish
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
3.7-3.8
2.57-2.66
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Subconchoidal, Conchoidal, Brittle
Cleavage
Distinct on {010}
Fair on {100}, poor on {001} and {010}
Mohs Hardness
7-7.5
7-7.5
Chemical Composition
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Mg2Al4Si5O18
Luster
Resinous
Greasy, Vitreous
Pleochroism
X = colorless; Y = pale yellow; Z = golden yellow
X = pale yellow
Dispersion
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Transparency
Blue Chart Gem Identification (2010) More from other references
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Refractive Index
1.736-1.762
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Optic Character
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Crystal System
monoclinic
Orthorhombic
Birefringence
0.009-0.015
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Clarity
Blue Chart Gem Identification (2010) More from other references
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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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Staurolite Vs Cordierite Fracture
Fracture is an important parameter when you compare Staurolite and Cordierite Physical Properties. It is necessary to understand the significance of these properties, before you compare Staurolite 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 Staurolite is Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Subconchoidal. Cordierite fracture is Brittle, Conchoidal and Subconchoidal.
Staurolite Vs Cordierite Luster
A primary knowledge about Staurolite 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. Staurolite exhibits Resinous luster. Cordierite, on other hand, exhibits Greasy and Vitreous luster.