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Crystal Opal and Poldervaartite Physical Properties


Poldervaartite and Crystal Opal Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
1.97-2.22   
2.91   

Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   
Handbook of mineralogy (2001)   

Cleavage
Not Available   
None   

Mohs Hardness
5.5-6.5   
Not Available   

Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.   
(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)   

Optical Properties >>
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Crystal Opal and Poldervaartite Chemical Formula

While comparing Crystal Opal and Poldervaartite 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 Crystal Opal and Poldervaartite chemical formula.

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Crystal Opal and Poldervaartite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Crystal Opal and Poldervaartite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Crystal Opal and Poldervaartite Optical Properties during the identification of gemstone. Specific gravity of Crystal Opal is 2.91 whereas that of Poldervaartite is 2.91.

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