Verdite and Topaz Physical Properties

Verdite

Topaz

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.80-3.0

3.49-3.57

1.5 Fracture

Not Available

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

1.6 Cleavage

{110} Good

[001] Perfect

1.7 Mohs Hardness

1.8 Chemical Composition

NaFeS2•2(H2O)

Al₂SiO₄(F,OH)₂

Verdite and Topaz Chemical Formula

While comparing Verdite 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 Verdite and Topaz chemical formula.

Chemical formula of Verdite- NaFeS2•2(H2O)
Chemical formula of Topaz- Al₂SiO₄(F,OH)₂

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Verdite and Topaz Specific Gravity

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