Dumortierite and Nuummite Physical Properties

Dumortierite

Nuummite

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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

3.26-3.413.18-3.37

1 7.18

1.5 Fracture

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

Conchoidal

1.6 Cleavage

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

Perfect on 210

1.7 Mohs Hardness

7-8.55.5-6

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

Not Available

Dumortierite and Nuummite Chemical Formula

While comparing Dumortierite and Nuummite 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 Dumortierite and Nuummite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Dumortierite and Nuummite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Nuummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Nuummite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 3.18-3.37 whereas that of Nuummite is 3.18-3.37.