Langbeinite and Topaz Physical Properties

Langbeinite

Topaz

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Slowly dissolves in water

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available3.49-3.57

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

None

[001] Perfect

1.7 Mohs Hardness

3.5-48

2 10

1.8 Chemical Composition

Not Available

Al₂SiO₄(F,OH)₂

Langbeinite and Topaz Chemical Formula

While comparing Langbeinite 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 Langbeinite and Topaz chemical formula.

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

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Langbeinite and Topaz Specific Gravity

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