Topaz and Piemontite Physical Properties

Topaz

Piemontite

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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

Uneven, Splintery

1.6 Cleavage

[001] Perfect

[001] good, [100] distinct

1.7 Mohs Hardness

86-6.5

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

Not Available

Topaz and Piemontite Chemical Formula

While comparing Topaz and Piemontite 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 Piemontite chemical formula.

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

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Topaz and Piemontite Specific Gravity

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