Piemontite and Dumortierite Physical Properties

Piemontite

Dumortierite

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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 Available3.26-3.41

1 7.18

1.5 Fracture

Uneven, Splintery

Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

1.6 Cleavage

[001] good, [100] distinct

Distinct on {100}, poor on {110}; parting on {001}

1.7 Mohs Hardness

6-6.57-8.5

2 10

1.8 Chemical Composition

Not Available

AlAl₆O₃BSi₃O₁₈

Piemontite and Dumortierite Chemical Formula

While comparing Piemontite and Dumortierite 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 Dumortierite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Piemontite and Dumortierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Piemontite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Piemontite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Piemontite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.