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Obsidian
Obsidian

Pezzottaite
Pezzottaite



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Obsidian
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Pezzottaite

Obsidian and Pezzottaite 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
 
-
-
-
2.90-3.14
Conchoidal, Uneven
Imperfect; basal
7.5-8
(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.

Obsidian and Pezzottaite Chemical Formula

While comparing Obsidian and Pezzottaite 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 Pezzottaite chemical formula.

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Obsidian and Pezzottaite Specific Gravity

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