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Apatite and Crystal Opal Physical Properties


Crystal Opal and Apatite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.16-3.23   
1.97-2.22   

Fracture
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven   
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   

Cleavage
[0001] indistinct, [1010] indistinct   
Not Available   

Mohs Hardness
5   
5.5-6.5   

Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references   
SiO 2 + H 2OUlrich Henn and Claudio C.   

Optical Properties >>
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Apatite and Crystal Opal Chemical Formula

While comparing Apatite 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 Apatite and Crystal Opal chemical formula.

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Apatite and Crystal Opal Specific Gravity

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

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