Sylvite and Topaz Physical Properties

Sylvite

Topaz

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.9933.49-3.57

1 7.18

1.5 Fracture

Uneven, Brittle

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

1.6 Cleavage

Perfect on [100], [010], [001]

[001] Perfect

1.7 Mohs Hardness

2.58

2 10

1.8 Chemical Composition

Not Available

Al₂SiO₄(F,OH)₂

Sylvite and Topaz Chemical Formula

While comparing Sylvite 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 Sylvite and Topaz chemical formula.

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

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Sylvite and Topaz Specific Gravity

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