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Piemontite
Piemontite

Spinel
Spinel



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Piemontite
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Spinel

Piemontite and Spinel Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
-9999
Uneven, Splintery
[001] good, [100] distinct
6-6.5
Ca2Al3(SiO4)(Si2O7)O(OH)
 
-
-
-
3.64-3.66
Conchoidal, Uneven
None, but may exhibit slight parting
8
MgAl2O4

Piemontite and Spinel Chemical Formula

While comparing Piemontite and Spinel physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Piemontite and Spinel chemical formula.

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Piemontite and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Piemontite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Piemontite Vs Spinel during the identification of gemstone. Specific gravity of Piemontite is whereas that of Spinel is .