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Hackmanite
Hackmanite

Common Opal
Common Opal



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Hackmanite
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Common Opal

Hackmanite and Common Opal Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.27-2.33
-
Perfect
5.5-6
Na 8Al 6Si 6O 24Cl 2Michael O’Donoghue , Gems, Sixth Edition (2006)
 
-
-
-
1.98-2.50
Conchoidal
None
5.5-6.5
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Hackmanite and Common Opal Chemical Formula

While comparing Hackmanite 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 Hackmanite and Common Opal chemical formula.

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Hackmanite and Common Opal Specific Gravity

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