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Topaz and Spinel Physical Properties


Spinel and Topaz Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
none   

Durability
Not Available   
Not Available   

Specific Gravity
3.49-3.57   
3.64-3.66   

Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle   
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)   

Cleavage
[001] Perfect   
None, but may exhibit slight parting   

Mohs Hardness
8   
8   

Chemical Composition
Al2SiO4(F,OH)2   
MgAl2O4   

Optical Properties >>
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Topaz and Spinel Chemical Formula

While comparing Topaz and Spinel 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 Spinel chemical formula.

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Topaz and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Spinel Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3.64-3.66 whereas that of Spinel is 3.64-3.66.

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