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Topaz and Agate Opal Physical Properties


Agate Opal and Topaz Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.49-3.57   
1.98-2.50   

Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle   
Conchoidal, Conchoidal, Gemstones of the world (2001)   

Cleavage
[001] Perfect   
Not Available   

Mohs Hardness
8   
5.5-6.5   

Chemical Composition
Al2SiO4(F,OH)2   
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)   

Optical Properties >>
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Topaz and Agate Opal Chemical Formula

While comparing Topaz and Agate 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 Topaz and Agate Opal chemical formula.

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Topaz and Agate Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Agate Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Agate Opal Optical Properties during the identification of gemstone. Specific gravity of Topaz is 1.98-2.50 whereas that of Agate Opal is 1.98-2.50.

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