Iolite and Jet Physical Properties

Iolite

Jet

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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

2.6-2.71.19-1.35

1 7.18

1.5 Fracture

Not Available

ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

1.6 Cleavage

3,1

Not Available

1.7 Mohs Hardness

7-7.52.5-4

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

Not Available

Iolite and Jet Chemical Formula

While comparing Iolite and Jet 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 Jet chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Iolite and Jet Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Jet Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Jet Optical Properties during the identification of gemstone. Specific gravity of Iolite is 1.19-1.35 whereas that of Jet is 1.19-1.35.