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Turquoise
Turquoise

Opal
Opal



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Turquoise
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Opal

Turquoise and Opal Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
Soluble
-
2.30-2.90
Conchoidal
Good to perfect_usually N/A
5-6
CuAl6(PO4)4(OH)8 • 4H2O
 
BrittleWalter Schumann
hot salt water
-
1.98-2.25
Conchoidal
None
5-6.5
SiO2 · nH2O

Turquoise and Opal Chemical Formula

While comparing Turquoise 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 Turquoise and Opal chemical formula.

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Turquoise and Opal Specific Gravity

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