Vivianite Vs Pargasite
Origin
Southern and central Africa
Southern and central Africa, Vietnam
Color
Blue, Green, Colorless
Green, Black, Brown
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
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Solubility
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Durability
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Specific Gravity
2.64-2.70
3.04-3.26
Fracture
(e.g. graphite).
Splintery, Brittle, Uneven
Cleavage
{010} Perfect
{110} perfect
Mohs Hardness
Not Available
5-6
Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous, Pearly
Vitreous
Pleochroism
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael OâDonoghue
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Dispersion
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Transparency
Transparent
Transparent
Refractive Index
1.560-1.640
1.613-1.663
Optic Character
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Crystal System
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monoclinic
Birefringence
0.054-0.075
0.020
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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Vivianite Vs Pargasite Fracture
Fracture is an important parameter when you compare Vivianite and Pargasite Physical Properties. It is necessary to understand the significance of these properties, before you compare Vivianite Vs Pargasite 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).. Pargasite fracture is Brittle, Splintery and Uneven.
Vivianite Vs Pargasite Luster
A primary knowledge about Vivianite vs Pargasite 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. Pargasite, on other hand, exhibits Vitreous luster.