Iolite and Andesine Physical Properties

Iolite

Andesine

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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

2.6-2.7

2.65-2.69

1.5 Fracture

Not Available

Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

3,1

Perfect on {001}, good on {010}

1.7 Mohs Hardness

7-7.5

6-6.5

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

(Na,Ca)Al_1-2Si_3-2O₈

Iolite and Andesine Chemical Formula

While comparing Iolite and Andesine 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 Andesine chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Andesine- (Na,Ca)Al_1-2Si_3-2O₈

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Iolite and Andesine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Andesine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Andesine Optical Properties during the identification of gemstone. Specific gravity of Iolite is 2.65-2.69 whereas that of Andesine is 2.65-2.69.