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Anhydrite and Precious Opal Physical Properties


Precious Opal and Anhydrite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.90-2.98   
1.98-2.25   

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

Cleavage
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.   
Not Available   

Mohs Hardness
3.5   
5-6.5   

Chemical Composition
CaSO 4Michael O’Donoghue , Gems, Sixth edition (2006) More from other references   
SiO 2 · nH 2OGemdat.org , Management Team (2012)   

Optical Properties >>
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Anhydrite and Precious Opal Chemical Formula

While comparing Anhydrite and Precious 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 Anhydrite and Precious Opal chemical formula.

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Anhydrite and Precious Opal Specific Gravity

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

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