Nickeline and Topaz Physical Properties

Nickeline

Topaz

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available3.49-3.57

1 7.18

1.5 Fracture

Conchoidal, Uneven

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

1.6 Cleavage

{1010} Imperfect, {0001} Imperfect

[001] Perfect

1.7 Mohs Hardness

5-5.58

2 10

1.8 Chemical Composition

Not Available

Al₂SiO₄(F,OH)₂

Nickeline and Topaz Chemical Formula

While comparing Nickeline 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 Nickeline and Topaz chemical formula.

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

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Nickeline and Topaz Specific Gravity

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