Gahnospinel and Iolite Physical Properties

Gahnospinel

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

3.65-4.552.6-2.7

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

Not Available

1.6 Cleavage

None, but may exhibit slight parting

3,1

1.7 Mohs Hardness

7.5-87-7.5

2 10

1.8 Chemical Composition

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

Mg₂Al₄Si₅O₁₈

Gahnospinel and Iolite Chemical Formula

While comparing Gahnospinel 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 Gahnospinel and Iolite chemical formula.

Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Gahnospinel and Iolite Specific Gravity

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