Zinnwaldite and Topaz Physical Properties

Zinnwaldite

Topaz

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1 Physical Properties

1.1 Tenacity

Elastic

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.9-3.13.49-3.57

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

Perfect basal {001}

[001] Perfect

1.7 Mohs Hardness

3.5-4.08

2 10

1.8 Chemical Composition

Not Available

Al₂SiO₄(F,OH)₂

Zinnwaldite and Topaz Chemical Formula

While comparing Zinnwaldite 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 Zinnwaldite and Topaz chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂

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Zinnwaldite and Topaz Specific Gravity

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