Weloganite and Topaz Physical Properties

Weloganite

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

3.20-3.223.49-3.57

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

Perfect on pseudo {0001}

[001] Perfect

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

Not Available

Al₂SiO₄(F,OH)₂

Weloganite and Topaz Chemical Formula

While comparing Weloganite 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 Weloganite and Topaz chemical formula.

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

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Weloganite and Topaz Specific Gravity

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