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Hemimorphite
Hemimorphite

Common Opal
Common Opal



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Hemimorphite
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Common Opal

Hemimorphite and Common Opal Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Soluble
-
3.30-3.50
Uneven, ConchoidalWalter Schumann, Conchoidal
Perfect on {110}, poor on {101}, {001} rare
5
Zn 4Si 2O 7(OH) 2H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
-
-
-
1.98-2.50
Conchoidal
None
5.5-6.5
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Hemimorphite and Common Opal Chemical Formula

While comparing Hemimorphite and Common 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 Hemimorphite and Common Opal chemical formula.

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Hemimorphite and Common Opal Specific Gravity

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