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Dioptase and Topaz Physical Properties


Topaz and Dioptase Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Soluble   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.25-3.35   
3.49-3.57   

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

Cleavage
Perfect in three directions   
[001] Perfect   

Mohs Hardness
5   
8   

Chemical Composition
CuSiO 2(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
Al2SiO4(F,OH)2   

Optical Properties >>
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Dioptase and Topaz Chemical Formula

While comparing Dioptase and Topaz 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 Dioptase and Topaz chemical formula.

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Dioptase and Topaz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dioptase and Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dioptase and Topaz Optical Properties during the identification of gemstone. Specific gravity of Dioptase is 3.49-3.57 whereas that of Topaz is 3.49-3.57.

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Green Gemstones


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