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Piemontite
Piemontite

Aragonite
Aragonite



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Piemontite
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Aragonite

Piemontite and Aragonite 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)
 
Brittle
Dilute acid
-
2.93-2.96
Subconchoidal, Conchoidal
Distinct on {010}, imperfect {110} and {011}
3.5-4
CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Piemontite and Aragonite Chemical Formula

While comparing Piemontite and Aragonite 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 Aragonite chemical formula.

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Piemontite and Aragonite Specific Gravity

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