Lazurite Vs Neptunite
Origin
Afghanistan, Southern and central Africa
USA
Color
Blue, Greenish, Violet
Black, Red, Brown
Streak
Blue, White
Brown, Red
For which Rashi?
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Planet
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Element of Planets
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Energy
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Finger
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Ring Metal
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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
Soluble
Not Available
Durability
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Specific Gravity
2.75
3.19-3.23
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Cleavage
Imperfect on {110}
{110} good
Chemical Composition
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Pleochroism
Not Available
x=yellow-orange
Dispersion
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Transparency
Gemmological Tables (2004) More from other references
Translucent
Refractive Index
1.500
1.692-1.734
Optic Character
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Crystal System
Isometric
monoclinic
Birefringence
Not Available
0.0294-0.0452
Clarity
Gemmological Tables (2004) More from other references
Translucent
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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Lazurite Vs Neptunite Fracture
Fracture is an important parameter when you compare Lazurite and Neptunite Physical Properties. It is necessary to understand the significance of these properties, before you compare Lazurite Vs Neptunite 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 Lazurite is Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal and Brittle. Neptunite fracture is Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001) and Brittle.
Lazurite Vs Neptunite Luster
A primary knowledge about Lazurite vs Neptunite 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. Lazurite exhibits Vitreous luster. Neptunite, on other hand, exhibits Vitreous luster.
