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Piemontite
Piemontite

Augelite
Augelite



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Piemontite
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Augelite

Piemontite and Augelite Physical Properties

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)
 
-
-
-
2.70-2.75
Conchoidal
From the Greek for luster, for its pearly luster on the cleavage.
4.5-5
Al 2(PO 4)(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)

Piemontite and Augelite Chemical Formula

While comparing Piemontite and Augelite 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 Augelite chemical formula.

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Piemontite and Augelite Specific Gravity

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