Neptunite Vs Gahnite
Color
Black, Red, Brown
Blue, Green, Greenish, Black
Streak
Brown, Red
Grey, gray
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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Tenacity
Brittle
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Solubility
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Durability
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Specific Gravity
3.19-3.23
4.00-4.62
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Conchoidal, Uneven
Cleavage
{110} good
Indistinct parting on [111]
Chemical Composition
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Pleochroism
x=yellow-orange
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Dispersion
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Transparency
Translucent
Gemmological Tables (2004) More from other references
Refractive Index
1.692-1.734
1.790-1.818
Optic Character
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Crystal System
monoclinic
cubic
Birefringence
0.0294-0.0452
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Clarity
Translucent
TransparentUlrich 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 Gahnite Fracture
Fracture is an important parameter when you compare Neptunite and Gahnite Physical Properties. It is necessary to understand the significance of these properties, before you compare Neptunite Vs Gahnite 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 Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001) and Brittle. Gahnite fracture is Conchoidal and Uneven.
Neptunite Vs Gahnite Luster
A primary knowledge about Neptunite vs Gahnite 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. Gahnite, on other hand, exhibits Vitreous luster.
