Cavansite Vs Lazurite
Origin
India
Afghanistan, Southern and central Africa
Color
Blue, Greenish, Greenish, Blue
Blue, Greenish, Violet
Streak
Blue, White
Blue, White
For which Rashi?
Not Available
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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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Solubility
Not Available
Soluble
Durability
Not Available
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Specific Gravity
2.25-2.33
2.75
Fracture
Brittle, Metallic, Brittle, Metallic
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Good on {010}
Imperfect on {110}
Chemical Composition
Ca(VO)Si4O10•4(H2O)
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Luster
Vitreous, Pearly
Vitreous
Pleochroism
Visible: X=Z= colorless Y= blue
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Dispersion
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Transparency
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Gemmological Tables (2004) More from other references
Refractive Index
1.542
1.500
Optic Character
Not Available
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Crystal System
Orthorhombic
Isometric
Birefringence
0.009
Not Available
Clarity
Not Available
Gemmological Tables (2004) More from other references
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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Cavansite Vs Lazurite Fracture
Fracture is an important parameter when you compare Cavansite and Lazurite Physical Properties. It is necessary to understand the significance of these properties, before you compare Cavansite Vs Lazurite 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 Cavansite is Brittle, Brittle, Metallic and Metallic. Lazurite fracture is Brittle, Conchoidal, Gemstones (2009), Uneven and UnevenArthur Thomas.
Cavansite Vs Lazurite Luster
A primary knowledge about Cavansite vs Lazurite 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. Cavansite exhibits Pearly and Vitreous luster. Lazurite, on other hand, exhibits Vitreous luster.