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Turquoise
Turquoise

Purpurite
Purpurite



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Turquoise
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Purpurite

Turquoise and Purpurite Physical Properties

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
 
-
-
-
3.2-3.4
Uneven
[100] [001] perfect
4-4.5
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

Turquoise and Purpurite Chemical Formula

While comparing Turquoise and Purpurite 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 Purpurite chemical formula.

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Turquoise and Purpurite Specific Gravity

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