Iolite and Quartz Physical Properties

Iolite

Quartz

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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

2.6-2.72.65

1 7.18

1.5 Fracture

Not Available

Conchoidal, Conchoidal, Brittle, Gems

1.6 Cleavage

3,1

{0110} Indistinct

1.7 Mohs Hardness

7-7.57

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

SiO₂

Iolite and Quartz Chemical Formula

While comparing Iolite and Quartz 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 Quartz chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Quartz- SiO₂

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Iolite and Quartz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Quartz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Quartz Optical Properties during the identification of gemstone. Specific gravity of Iolite is 2.65 whereas that of Quartz is 2.65.