Iolite and Kornerupine Physical Properties

Iolite

Kornerupine

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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

2.6-2.73.25-3.45

1 7.18

1.5 Fracture

Not Available

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven

1.6 Cleavage

3,1

Good on {110}

1.7 Mohs Hardness

7-7.56.5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Iolite and Kornerupine Chemical Formula

While comparing Iolite and Kornerupine 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 Kornerupine chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Iolite and Kornerupine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Kornerupine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Kornerupine Optical Properties during the identification of gemstone. Specific gravity of Iolite is 3.25-3.45 whereas that of Kornerupine is 3.25-3.45.