Poudretteite Vs Gahnite
Origin
Canada, Southern and central Africa
Australia
Color
Violet, Colorless, pink
Blue, Green, Greenish, Black
For which Rashi?
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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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Tenacity
Brittle
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Solubility
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Durability
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Specific Gravity
2.51-2.53
4.00-4.62
Fracture
Conchoidal, Splintery
Conchoidal, Uneven
Cleavage
None
Indistinct parting on [111]
Chemical Composition
KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Pleochroism
Colorless
Not Available
Dispersion
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Transparency
Gemmological Tables (2004) More from other references
Gemmological Tables (2004) More from other references
Refractive Index
1.511-1.532
1.790-1.818
Optic Character
Not Available
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Crystal System
Hexagonal
cubic
Birefringence
0.021
Not Available
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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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Poudretteite Vs Gahnite Fracture
Fracture is an important parameter when you compare Poudretteite and Gahnite Physical Properties. It is necessary to understand the significance of these properties, before you compare Poudretteite 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 Poudretteite is Conchoidal and Splintery. Gahnite fracture is Conchoidal and Uneven.
Poudretteite Vs Gahnite Luster
A primary knowledge about Poudretteite 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. Poudretteite exhibits Vitreous luster. Gahnite, on other hand, exhibits Vitreous luster.