Iolite and Zircon Physical Properties

Iolite

Zircon

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.73.93-4.73

1 7.18

1.5 Fracture

Not Available

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

3,1

{110} and {111}

1.7 Mohs Hardness

7-7.57.5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

ZrSiO₄

Iolite and Zircon Chemical Formula

While comparing Iolite and Zircon 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 Zircon chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Zircon- ZrSiO₄

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Iolite and Zircon Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Zircon Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Zircon Optical Properties during the identification of gemstone. Specific gravity of Iolite is 3.93-4.73 whereas that of Zircon is 3.93-4.73.