Topaz and Nickeline Physical Properties

Topaz

Nickeline

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.49-3.57Not Available

1 7.18

1.5 Fracture

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

Conchoidal, Uneven

1.6 Cleavage

[001] Perfect

{1010} Imperfect, {0001} Imperfect

1.7 Mohs Hardness

85-5.5

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

Not Available

Topaz and Nickeline Chemical Formula

While comparing Topaz and Nickeline 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 Topaz and Nickeline chemical formula.

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

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Topaz and Nickeline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Nickeline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Nickeline Optical Properties during the identification of gemstone. Specific gravity of Topaz is Not Available whereas that of Nickeline is Not Available.