Iolite and Natrolite Physical Properties

Iolite

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

2.6-2.72.20-2.26

1 7.18

1.5 Fracture

Not Available

Uneven, Brittle, Metallic, Gemstones (2009)

1.6 Cleavage

3,1

Perfect on {110}

1.7 Mohs Hardness

7-7.55-5.5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

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

Iolite and Natrolite Chemical Formula

While comparing Iolite 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 Iolite and Natrolite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
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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Iolite and Natrolite Specific Gravity

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