Vivianite Vs Cordierite Iolite
Origin
Southern and central Africa
Canada, Madagascar, Southern and central Africa, Sri Lanka, USA
Color
Blue, Green, Colorless
Violet, Blue
Streak
White
Not Available
For which Rashi?
Not Available
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Planet
Not Available
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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
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Not to wear with
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Powers
Not Available
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Planetary
Not Available
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Talisman
Not Available
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Tenacity
Not Available
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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
2.64-2.70
2.56-2.66
Fracture
(e.g. graphite).
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
{010} Perfect
Not Available
Mohs Hardness
Not Available
7-7.5
Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
Luster
Vitreous, Pearly
Vitreous
Pleochroism
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael OâDonoghue
Strong trichroism: colorless to yellowish
Transparency
Transparent
Transparent
Refractive Index
1.560-1.640
1.542-1.578
Optic Character
Not Available
Biaxial/+
Crystal System
Not Available
Not Available
Birefringence
0.054-0.075
0.008-0.012
Clarity
Transparent
Transparent
Neurological
Not Available
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Cardiovascular
Not Available
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Respiratory
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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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Vivianite Vs Cordierite Iolite Fracture
Fracture is an important parameter when you compare Vivianite and Cordierite Iolite Physical Properties. It is necessary to understand the significance of these properties, before you compare Vivianite 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 Vivianite is (e.g. graphite).. Cordierite Iolite fracture is ConchoidalWalter Schumann, Gemstones of the world (2001), Uneven and Uneven.
Vivianite Vs Cordierite Iolite Luster
A primary knowledge about Vivianite 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. Vivianite exhibits Pearly and Vitreous luster. Cordierite Iolite, on other hand, exhibits Vitreous luster.