Vivianite Vs Legrandite
Origin
Southern and central Africa
Mexico
Color
Blue, Green, Colorless
Yellow, yellowish orange
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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Brittle
Solubility
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Durability
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Specific Gravity
2.64-2.70
3.98-4.04
Fracture
(e.g. graphite).
Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle
Cleavage
{010} Perfect
Imperfect, poor one {100}
Mohs Hardness
Not Available
4.5-5
Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Pearly
Vitreous
Pleochroism
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael OâDonoghue
Colorless
Dispersion
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Transparency
Transparent
Gems
Refractive Index
1.560-1.640
1.702-1.740
Optic Character
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Crystal System
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monoclinic
Birefringence
0.054-0.075
0.060
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 Legrandite Fracture
Fracture is an important parameter when you compare Vivianite and Legrandite Physical Properties. It is necessary to understand the significance of these properties, before you compare Vivianite Vs Legrandite 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).. Legrandite fracture is Brittle, Conchoidal, Gemstones (2009) and UnevenArthur Thomas.
Vivianite Vs Legrandite Luster
A primary knowledge about Vivianite vs Legrandite 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. Legrandite, on other hand, exhibits Vitreous luster.