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Obsidian
Obsidian

Piemontite
Piemontite



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Obsidian
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Piemontite

Obsidian and Piemontite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.35-2.60
Conchoidal, ConchoidalWalter Schumann
None
5-5.5
SiO2
 
Brittle
-
-
-9999
Uneven, Splintery
[001] good, [100] distinct
6-6.5
Ca2Al3(SiO4)(Si2O7)O(OH)

Obsidian and Piemontite Chemical Formula

While comparing Obsidian and Piemontite 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 Obsidian and Piemontite chemical formula.

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Obsidian and Piemontite Specific Gravity

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