Iolite and Rutile Physical Properties

Iolite

Rutile

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Insoluble in acids

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.74.20-4.30

1 7.18

1.5 Fracture

Not Available

Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

3,1

{110} good, 100 moderate, parting on {092} and {011}

1.7 Mohs Hardness

7-7.56-6.5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Iolite and Rutile Chemical Formula

While comparing Iolite and Rutile 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 Rutile chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Iolite and Rutile Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Rutile Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Rutile Optical Properties during the identification of gemstone. Specific gravity of Iolite is 4.20-4.30 whereas that of Rutile is 4.20-4.30.