Bustamite and Ruby Physical Properties

Bustamite

Ruby

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Partly soluble in HCl.

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.32-3.433.97-4.05

1 7.18

1.5 Fracture

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

Conchoidal

1.6 Cleavage

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

No true cleavage

1.7 Mohs Hardness

5.5-69

2 10

1.8 Chemical Composition

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

Al ₂ O ₃

Bustamite and Ruby Chemical Formula

While comparing Bustamite and Ruby 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 Bustamite and Ruby chemical formula.

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

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Bustamite and Ruby Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Ruby Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.97-4.05 whereas that of Ruby is 3.97-4.05.