Piemontite and Topaz Physical Properties

Piemontite

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

Uneven, Splintery

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

1.6 Cleavage

[001] good, [100] distinct

[001] Perfect

1.7 Mohs Hardness

6-6.58

2 10

1.8 Chemical Composition

Not Available

Al₂SiO₄(F,OH)₂

Piemontite and Topaz Chemical Formula

While comparing Piemontite 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 Piemontite and Topaz chemical formula.

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

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Piemontite and Topaz Specific Gravity

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