Bustamite and Star Ruby Physical Properties

Bustamite

Star Ruby

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Partly soluble in HCl.

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.32-3.433.95-4.10

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

5.5-6Not Available

2 10

1.8 Chemical Composition

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

Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Bustamite and Star Ruby Chemical Formula

While comparing Bustamite and Star 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 Star Ruby chemical formula.

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

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Bustamite and Star Ruby Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Star Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Star Ruby Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.95-4.10 whereas that of Star Ruby is 3.95-4.10.