Iolite and Malachite Physical Properties

Iolite

Malachite

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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

2.6-2.7

3.25-4.10

1.5 Fracture

Not Available

Conchoidal, Conchoidal, Gemstones (2009), Uneven

1.6 Cleavage

3,1

Perfect on { 2 01} fair on {010}

1.7 Mohs Hardness

7-7.5

3.5-4

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

Cu₂CO₃(OH)₂

Iolite and Malachite Chemical Formula

While comparing Iolite and Malachite 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 Malachite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Malachite- Cu₂CO₃(OH)₂

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Iolite and Malachite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Malachite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Malachite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 3.25-4.10 whereas that of Malachite is 3.25-4.10.