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Petoskey Stone
Petoskey Stone

Opal
Opal



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Petoskey Stone
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Opal

Petoskey Stone and Opal Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
-9999
-
None
7
CaCO3
 
BrittleWalter Schumann
hot salt water
-
1.98-2.25
Conchoidal
None
5-6.5
SiO2 · nH2O

Petoskey Stone and Opal Chemical Formula

While comparing Petoskey Stone and 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 Petoskey Stone and Opal chemical formula.

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Petoskey Stone and Opal Specific Gravity

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