Iolite and Cobaltite Physical Properties

Iolite

Cobaltite

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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

2.6-2.76.3

1 7.18

1.5 Fracture

Not Available

UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic

1.6 Cleavage

3,1

{100} Good, {010} Good, {001} Good

1.7 Mohs Hardness

7-7.55.5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

CoAsSAnthony et al , Handbook of mineralogy (2001)

Iolite and Cobaltite Chemical Formula

While comparing Iolite and Cobaltite 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 Cobaltite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)

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Iolite and Cobaltite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 6.3 whereas that of Cobaltite is 6.3.