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Chalcedony
Chalcedony

Powellite
Powellite



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Chalcedony
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Chalcedony and Powellite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
Soluble
-
2.55-2.70
Uneven, Splintery, Conchoidal
Absent
6.5-7
SiO2
 
-
-
-
4.23
Conchoidal
{111} Distinct
3.5-4
CaMoO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Chalcedony and Powellite Chemical Formula

While comparing Chalcedony and Powellite 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 Chalcedony and Powellite chemical formula.

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Chalcedony and Powellite Specific Gravity

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