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Topaz
Topaz

Poudretteite
Poudretteite



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Topaz
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Poudretteite

Topaz and Poudretteite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.49-3.57
Subconchoidal, Uneven, Conchoidal
[001] Perfect
8
Al2SiO4(F,OH)2
 
Brittle
-
-
2.51-2.53
Conchoidal, Splintery
None
5
KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)

Topaz and Poudretteite Chemical Formula

While comparing Topaz and Poudretteite 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 Poudretteite chemical formula.

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Topaz and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz Vs Poudretteite during the identification of gemstone. Specific gravity of Topaz is whereas that of Poudretteite is .