Omphacite and Iolite Physical Properties

Omphacite

Iolite

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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

3.16-3.432.6-2.7

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

Not Available

1.6 Cleavage

{110} Good, {110} Good

3,1

1.7 Mohs Hardness

5-67-7.5

2 10

1.8 Chemical Composition

(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

Mg₂Al₄Si₅O₁₈

Omphacite and Iolite Chemical Formula

While comparing Omphacite and Iolite 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 Omphacite and Iolite chemical formula.

Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Omphacite and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Omphacite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Omphacite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Omphacite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.