Ruby and Rutile Physical Properties

Ruby

Rutile

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

Insoluble in acids

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.054.20-4.30

1 7.18

1.5 Fracture

Conchoidal

Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

No true cleavage

{110} good, 100 moderate, parting on {092} and {011}

1.7 Mohs Hardness

96-6.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Ruby and Rutile Chemical Formula

While comparing Ruby and Rutile 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 Rutile chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Ruby and Rutile Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Rutile Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Rutile Optical Properties during the identification of gemstone. Specific gravity of Ruby is 4.20-4.30 whereas that of Rutile is 4.20-4.30.