Poudretteite and Dumortierite Physical Properties

Poudretteite

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

2.51-2.533.26-3.41

1 7.18

1.5 Fracture

Conchoidal, Splintery

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

1.6 Cleavage

None

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

1.7 Mohs Hardness

57-8.5

2 10

1.8 Chemical Composition

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

AlAl₆O₃BSi₃O₁₈

Poudretteite and Dumortierite Chemical Formula

While comparing Poudretteite 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 Poudretteite and Dumortierite chemical formula.

Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

Compare Violet Gemstones

Poudretteite Vs Sapphire

Poudretteite Vs Rubellite

Poudretteite Vs Rutilated Quartz

Poudretteite and Dumortierite Specific Gravity

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