Vesuvianite and Topaz Physical Properties

Vesuvianite

Topaz

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Vesuvianite is virtually insolouble in acids

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.32-3.433.49-3.57

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

Poor on {110} and {100} very poor on {001}

[001] Perfect

1.7 Mohs Hardness

6-78

2 10

1.8 Chemical Composition

Not Available

Al₂SiO₄(F,OH)₂

Vesuvianite and Topaz Chemical Formula

While comparing Vesuvianite 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 Vesuvianite and Topaz chemical formula.

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

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Vesuvianite and Topaz Specific Gravity

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