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Hurlbutite and Crystal Opal Physical Properties


Crystal Opal and Hurlbutite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.90   
1.97-2.22   

Fracture
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal   
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   

Cleavage
None   
Not Available   

Mohs Hardness
6   
5.5-6.5   

Chemical Composition
CaBe 2(PO 4) 2Michael O’Donoghue , Gems, Sixth Edition (2006)   
SiO 2 + H 2OUlrich Henn and Claudio C.   

Optical Properties >>
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Hurlbutite and Crystal Opal Chemical Formula

While comparing Hurlbutite 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 Hurlbutite and Crystal Opal chemical formula.

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Hurlbutite and Crystal Opal Specific Gravity

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

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