Iolite and Goshenite Physical Properties

Iolite

Goshenite

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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

2.6-2.72.60-2.90

1 7.18

1.5 Fracture

Not Available

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

3,1

3,1 basal

1.7 Mohs Hardness

7-7.57.5-8

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

Be₃Al₂SiO₆

Iolite and Goshenite Chemical Formula

While comparing Iolite and Goshenite 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 Goshenite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Goshenite- Be₃Al₂SiO₆

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Iolite and Goshenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Goshenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Goshenite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 2.60-2.90 whereas that of Goshenite is 2.60-2.90.