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Crystal Opal and Faustite Physical Properties


Faustite 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   
2.9   

Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   
Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal   

Cleavage
Not Available   
{???} Indistinct   

Mohs Hardness
5.5-6.5   
4.5   

Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.   
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Crystal Opal and Faustite Chemical Formula

While comparing Crystal Opal and Faustite 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 Faustite chemical formula.

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Crystal Opal and Faustite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Crystal Opal and Faustite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Crystal Opal and Faustite Optical Properties during the identification of gemstone. Specific gravity of Crystal Opal is 2.9 whereas that of Faustite is 2.9.

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