Sardonyx and Iolite Physical Properties

Sardonyx

Iolite

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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

2.55-2.70

2.6-2.7

1.5 Fracture

Not Available

1.6 Cleavage

Not Available

3,1

1.7 Mohs Hardness

6.5-7

7-7.5

1.8 Chemical Composition

SiO 2Ulrich Henn and Claudio C.

Mg₂Al₄Si₅O₁₈

Sardonyx and Iolite Chemical Formula

While comparing Sardonyx and Iolite 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 Sardonyx and Iolite chemical formula.

Chemical formula of Sardonyx- SiO 2Ulrich Henn and Claudio C.
Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Sardonyx and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sardonyx and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sardonyx and Iolite Optical Properties during the identification of gemstone. Specific gravity of Sardonyx is 2.6-2.7 whereas that of Iolite is 2.6-2.7.