Ruby and Brookite Physical Properties

Ruby

Brookite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.053.87-4.14

1 7.18

1.5 Fracture

Conchoidal

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

No true cleavage

Poor on {120}, in traces on {001}

1.7 Mohs Hardness

95.5-6

2 10

1.8 Chemical Composition

Al ₂ O ₃

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Ruby and Brookite Chemical Formula

While comparing Ruby and Brookite 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 Brookite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Ruby and Brookite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Brookite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 3.87-4.14 whereas that of Brookite is 3.87-4.14.