Iolite and Bustamite Physical Properties

Iolite

Bustamite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Partly soluble in HCl.

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.73.32-3.43

1 7.18

1.5 Fracture

Not Available

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

3,1

{100} perfect; {110} and {1 1 0} good; {010} poor

1.7 Mohs Hardness

7-7.55.5-6

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Iolite and Bustamite Chemical Formula

While comparing Iolite and Bustamite 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 Bustamite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Iolite and Bustamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.