Dumortierite and Diaspore Physical Properties

Dumortierite

Diaspore

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1 Physical Properties

1.1 Tenacity

Not Available

Very brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.26-3.413.30-3.40

1 7.18

1.5 Fracture

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

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

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

{010} perfect, {110} distinct, {100} in traces

1.7 Mohs Hardness

7-8.56.5-7

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Dumortierite and Diaspore Chemical Formula

While comparing Dumortierite and Diaspore 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 Diaspore chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈
Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Dumortierite and Diaspore Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.