Schorl Vs Cordierite Iolite
Origin
India, Southern and central Africa, Madagascar
Canada, Madagascar, Southern and central Africa, Sri Lanka, USA
Color
Black, Brownish, Greenish
Violet, Blue
Streak
Brown
Not Available
For which Rashi?
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Planet
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Element of Planets
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Finger
Not Available
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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
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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
3.18-3.22
2.56-2.66
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
{1011} Indistinct
Not Available
Mohs Hardness
Not Available
7-7.5
Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
Pleochroism
Very strong: yellow-brown pale yellow
Strong trichroism: colorless to yellowish
Transparency
Transparent, Translucent
Transparent
Refractive Index
1.635-1.672
1.542-1.578
Optic Character
Not Available
Biaxial/+
Crystal System
Not Available
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Birefringence
0.025
0.008-0.012
Clarity
Transparent
Transparent
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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Schorl Vs Cordierite Iolite Fracture
Fracture is an important parameter when you compare Schorl and Cordierite Iolite Physical Properties. It is necessary to understand the significance of these properties, before you compare Schorl Vs Cordierite Iolite 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 Schorl is Brittle, Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Uneven and Uneven. Cordierite Iolite fracture is ConchoidalWalter Schumann, Gemstones of the world (2001), Uneven and Uneven.
Schorl Vs Cordierite Iolite Luster
A primary knowledge about Schorl vs Cordierite Iolite 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. Schorl exhibits Vitreous luster. Cordierite Iolite, on other hand, exhibits Vitreous luster.