Villiaumite and Topaz Physical Properties

Villiaumite

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

2.793.49-3.57

1 7.18

1.5 Fracture

Brittle, Metallic

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

1.6 Cleavage

{100} Perfect, {010} Perfect, {001} Perfect

[001] Perfect

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

NaFUlrich Henn and Claudio C.

Al₂SiO₄(F,OH)₂

Villiaumite and Topaz Chemical Formula

While comparing Villiaumite 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 Villiaumite and Topaz chemical formula.

Chemical formula of Villiaumite- NaFUlrich Henn and Claudio C.
Chemical formula of Topaz- Al₂SiO₄(F,OH)₂

Compare Gems Found in America

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Villiaumite Vs Zincite

Villiaumite Vs Witherite

Villiaumite and Topaz Specific Gravity

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