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Pezzottaite
Pezzottaite

Black Opal
Black Opal



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Pezzottaite
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Black Opal

Pezzottaite and Black Opal Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.90-3.14
Conchoidal, Uneven
Imperfect; basal
7.5-8
(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.
 
-
-
-
1.97-2.22
Conchoidal
None
6-6.5
SiO 2 + H 2OUlrich Henn and Claudio C.

Pezzottaite and Black Opal Chemical Formula

While comparing Pezzottaite and Black Opal 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 Pezzottaite and Black Opal chemical formula.

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Pezzottaite and Black Opal Specific Gravity

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