Neptunite Vs Andalusite
Origin
USA
Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)
Color
Black, Red, Brown
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
For which Rashi?
Not Available
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Planet
Not Available
Venus
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
Not Available
Solubility
Not Available
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Durability
Not Available
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Specific Gravity
3.19-3.23
3.05-3.21
Fracture
Conchoidal
Uneven, Subconchoidal, Splintery
Cleavage
{110} good
Good on {110}, poor on {100}
Chemical Composition
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Vitreous
Vitreous, Greasy
Pleochroism
x=yellow-orange
strongly trichroic
Transparency
Translucent
Transparent, Translucent
Refractive Index
1.692-1.734
1.627-1.650
Optic Character
Not Available
Not Available
Crystal System
monoclinic
Orthorhombic
Birefringence
0.0294-0.0452
0.009-0.010
Clarity
Translucent
Transparent
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 Andalusite Fracture
Fracture is an important parameter when you compare Neptunite and Andalusite Physical Properties. It is necessary to understand the significance of these properties, before you compare Neptunite Vs Andalusite 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. Andalusite fracture is Uneven, Subconchoidal and Splintery.
Neptunite Vs Andalusite Luster
A primary knowledge about Neptunite vs Andalusite 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. Andalusite, on other hand, exhibits Vitreous and Greasy luster.
