Selenite and Topaz Physical Properties

Selenite

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

Not Available3.49-3.57

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

[001] Perfect

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

Not Available

Al₂SiO₄(F,OH)₂

Selenite and Topaz Chemical Formula

While comparing Selenite 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 Selenite and Topaz chemical formula.

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

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Selenite and Topaz Specific Gravity

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