Origin
Switzerland
Brazil, Colombia, Southern and central Africa
Color
Brown, Brownish, Yellow, Black, Reddish
Greenish, Blue, Colorless, White, Green
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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Tenacity
Brittle
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Solubility
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Durability
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Specific Gravity
3.7-3.8
3.08-3.12
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle, Metallic
Cleavage
Distinct on {010}
{010} Perfect
Chemical Composition
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pleochroism
X = colorless; Y = pale yellow; Z = golden yellow
Weak: colorless-(greenish) yellow
Transparency
Blue Chart Gem Identification (2010) More from other references
Gemmological Tables (2004) More from other references
Refractive Index
1.736-1.762
1.650-1.677
Optic Character
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Crystal System
monoclinic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
Birefringence
0.009-0.015
0.019-0.025
Clarity
Blue Chart Gem Identification (2010) More from other references
TransparentUlrich Henn and Claudio C. Milisenda
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 Euclase Fracture
Fracture is an important parameter when you compare Staurolite and Euclase Physical Properties. It is necessary to understand the significance of these properties, before you compare Staurolite Vs Euclase 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. Euclase fracture is Brittle, ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001), Gemstones of the world (2001) and Metallic.
Staurolite Vs Euclase Luster
A primary knowledge about Staurolite vs Euclase 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. Euclase, on other hand, exhibits Vitreous luster.