Umbalite and Iolite Physical Properties

Umbalite

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

3.62-4.332.6-2.7

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)

Not Available

1.6 Cleavage

Not Available

3,1

1.7 Mohs Hardness

7-7.57-7.5

2 10

1.8 Chemical Composition

Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)

Mg₂Al₄Si₅O₁₈

Umbalite and Iolite Chemical Formula

While comparing Umbalite 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 Umbalite and Iolite chemical formula.

Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Umbalite and Iolite Specific Gravity

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