Dumortierite and Natrolite Physical Properties

Dumortierite

Natrolite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.26-3.412.20-2.26

1 7.18

1.5 Fracture

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

Uneven, Brittle, Metallic, Gemstones (2009)

1.6 Cleavage

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

Perfect on {110}

1.7 Mohs Hardness

7-8.55-5.5

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Dumortierite and Natrolite Chemical Formula

While comparing Dumortierite and Natrolite 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 Natrolite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈
Chemical formula of Natrolite- Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Dumortierite and Natrolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Natrolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Natrolite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 2.20-2.26 whereas that of Natrolite is 2.20-2.26.