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Pearl and Crystal Opal Physical Properties


Crystal Opal and Pearl Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.60-2.85   
1.97-2.22   

Fracture
Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)   
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   

Cleavage
none   
Not Available   

Mohs Hardness
2.5-4.5   
5.5-6.5   

Chemical Composition
Not Available   
SiO 2 + H 2OUlrich Henn and Claudio C.   

Optical Properties >>
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Pearl and Crystal Opal Chemical Formula

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

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Pearl and Crystal Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pearl and Crystal Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pearl and Crystal Opal Optical Properties during the identification of gemstone. Specific gravity of Pearl is 1.97-2.22 whereas that of Crystal Opal is 1.97-2.22.

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