Sapphire and Bustamite Physical Properties

Sapphire

Bustamite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble

Partly soluble in HCl.

1.3 Durability

Not Available

1.4 Specific Gravity

3.95-4.033.32-3.43

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

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

1.6 Cleavage

None, but may exhibit parting

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

1.7 Mohs Hardness

95.5-6

2 10

1.8 Chemical Composition

Al ₂ O ₃

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

Sapphire and Bustamite Chemical Formula

While comparing Sapphire 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 Sapphire and Bustamite chemical formula.

Chemical formula of Sapphire- Al ₂ O ₃
Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Sapphire and Bustamite Specific Gravity

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