Ruby and Bustamite Physical Properties

Ruby

Bustamite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

Partly soluble in HCl.

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.053.32-3.43

1 7.18

1.5 Fracture

Conchoidal

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

1.6 Cleavage

No true cleavage

{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

Ruby and Bustamite Chemical Formula

While comparing Ruby 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 Ruby and Bustamite chemical formula.

Chemical formula of Ruby- 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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Ruby and Bustamite Specific Gravity

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