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Pyrope and Opal Physical Properties


Opal and Pyrope Physical Properties


Physical Properties

Tenacity
Not Available   
BrittleWalter Schumann   

Solubility
insoluble in water   
hot salt water   

Durability
Not Available   
Not Available   

Specific Gravity
3.62-3.87   
1.98-2.25   

Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle   
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle   

Cleavage
None   
None   

Mohs Hardness
7-7.5   
5-6.5   

Chemical Composition
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)   
SiO2 · nH2O   

Optical Properties >>
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Pyrope and Opal Chemical Formula

While comparing Pyrope and 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 Pyrope and Opal chemical formula.

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Pyrope and Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrope and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrope and Opal Optical Properties during the identification of gemstone. Specific gravity of Pyrope is 1.98-2.25 whereas that of Opal is 1.98-2.25.

Red Gemstones

Red Gemstones


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