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Hodgkinsonite and Opal Physical Properties


Opal and Hodgkinsonite Physical Properties


Physical Properties

Tenacity
Not Available   
BrittleWalter Schumann   

Solubility
Not Available   
hot salt water   

Durability
Not Available   
Not Available   

Specific Gravity
4.06-4.08   
1.98-2.25   

Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic   
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle   

Cleavage
{???} Perfect   
None   

Mohs Hardness
4.5-5   
5-6.5   

Chemical Composition
Mn2+ Zn 2SiO 4(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
SiO2 · nH2O   

Optical Properties >>
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Hodgkinsonite and Opal Chemical Formula

While comparing Hodgkinsonite 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 Hodgkinsonite and Opal chemical formula.

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Hodgkinsonite and Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hodgkinsonite and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hodgkinsonite and Opal Optical Properties during the identification of gemstone. Specific gravity of Hodgkinsonite is 1.98-2.25 whereas that of Opal is 1.98-2.25.

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