Topaz and Cassiterite Physical Properties

Topaz

Cassiterite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.49-3.57

Subconchoidal, Uneven, Conchoidal

[001] Perfect

Al₂SiO₄(F,OH)₂

Brittle

insoluble

6.86-7.03

Subconchoidal, Uneven, Conchoidal, Irregular

{100} imperfect, {110} indistinct; partings on {111} or {011}

6-7

SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Topaz and Cassiterite Chemical Formula

While comparing Topaz and Cassiterite 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 Cassiterite chemical formula.

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Topaz and Cassiterite Specific Gravity

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