Iolite and Hibschite Physical Properties

Iolite

Hibschite

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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

2.6-2.73.05-3.08

1 7.18

1.5 Fracture

Not Available

Uneven, Uneven, Irregular, Management Team (2012), Conchoidal, Brittle

1.6 Cleavage

3,1

None

1.7 Mohs Hardness

7-7.56.5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

Ca 3Al 2(SiO 4) 3-x(OH) 4x (x=0.2 to 1.5)Anthony et al , Handbook of mineralogy (2001)

Iolite and Hibschite Chemical Formula

While comparing Iolite and Hibschite 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 Hibschite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Hibschite- Ca 3Al 2(SiO 4) 3-x(OH) 4x (x=0.2 to 1.5)Anthony et al , Handbook of mineralogy (2001)

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Iolite and Hibschite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Hibschite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Hibschite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 3.05-3.08 whereas that of Hibschite is 3.05-3.08.