Neptunite Vs Proustite
Origin
USA
Southern and central Africa
Color
Black, Red, Brown
Black, Reddish, gray
Streak
Brown, Red
Black, Red
For which Rashi?
Not Available
Not Available
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
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Durability
Not Available
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Specific Gravity
3.19-3.23
5.51-5.64
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Cleavage
{110} good
Distinct on {10 1 1}
Chemical Composition
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Adamantine
Pleochroism
x=yellow-orange
Moderate; cochineal-red to blood-red
Dispersion
Not Available
Not Available
Transparency
Translucent
OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Rarely transparentMore from other references
Refractive Index
1.692-1.734
2.792-3.087
Optic Character
Not Available
Not Available
Crystal System
monoclinic
Trigonal
Birefringence
0.0294-0.0452
0.295-0.296
Clarity
Translucent
OpaqueUlrich Henn and Claudio C. Milisenda
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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Neptunite Vs Proustite Fracture
Fracture is an important parameter when you compare Neptunite and Proustite Physical Properties. It is necessary to understand the significance of these properties, before you compare Neptunite Vs Proustite 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 Neptunite is Brittle, Conchoidal, ConchoidalAnthony et al and Handbook of mineralogy (2001). Proustite fracture is Brittle, ConchoidalArthur Thomas, Gemstones (2009), Uneven and Uneven.
Neptunite Vs Proustite Luster
A primary knowledge about Neptunite vs Proustite 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. Neptunite exhibits Vitreous luster. Proustite, on other hand, exhibits Adamantine luster.