Iolite and Piemontite Physical Properties

Iolite

Piemontite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.7Not Available

1 7.18

1.5 Fracture

Not Available

Uneven, Splintery

1.6 Cleavage

3,1

[001] good, [100] distinct

1.7 Mohs Hardness

7-7.56-6.5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

Not Available

Iolite and Piemontite Chemical Formula

While comparing Iolite and Piemontite 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 Piemontite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Iolite and Piemontite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Piemontite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Piemontite Optical Properties during the identification of gemstone. Specific gravity of Iolite is Not Available whereas that of Piemontite is Not Available.