Herderite Vs Cordierite Iolite
Origin
Southern and central Africa
Canada, Madagascar, Southern and central Africa, Sri Lanka, USA
Color
Colorless, White, Greenish
Violet, Blue
Streak
White
Not Available
For which Rashi?
Not Available
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Planet
Not Available
Not Available
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
Not Available
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Not to wear with
Not Available
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Powers
Not Available
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Planetary
Not Available
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Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.90-3.02
2.56-2.66
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
Indistinct on {110}
Not Available
Mohs Hardness
5-5.5
7-7.5
Chemical Composition
CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
Pleochroism
Not Available
Strong trichroism: colorless to yellowish
Transparency
Transparent
Transparent
Refractive Index
1.587-1.642
1.542-1.578
Optic Character
Biaxial/+
Biaxial/+
Crystal System
monoclinic
Not Available
Birefringence
0.028-0.032
0.008-0.012
Clarity
Transparent
Transparent
Neurological
Not Available
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Cardiovascular
Not Available
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Respiratory
Not Available
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
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Healing
Not Available
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Qualities Associated
Not Available
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Herderite Vs Cordierite Iolite Fracture
Fracture is an important parameter when you compare Herderite and Cordierite Iolite Physical Properties. It is necessary to understand the significance of these properties, before you compare Herderite 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 Herderite is Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Subconchoidal. Cordierite Iolite fracture is ConchoidalWalter Schumann, Gemstones of the world (2001), Uneven and Uneven.
Herderite Vs Cordierite Iolite Luster
A primary knowledge about Herderite 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. Herderite exhibits Vitreous luster. Cordierite Iolite, on other hand, exhibits Vitreous luster.