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Crystal Opal and Sard Physical Properties


Sard 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   
2.58-2.63   

Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   

Cleavage
Not Available   
Not Available   

Mohs Hardness
5.5-6.5   
6.5-7   

Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.   
SiO 2Ulrich Henn and Claudio C.   

Optical Properties >>
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Crystal Opal and Sard Chemical Formula

While comparing Crystal Opal and Sard 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 Sard chemical formula.

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Crystal Opal and Sard Specific Gravity

Another important criteria for qualitative analysis of gemstones is Crystal Opal and Sard Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Crystal Opal and Sard Optical Properties during the identification of gemstone. Specific gravity of Crystal Opal is 2.58-2.63 whereas that of Sard is 2.58-2.63.

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