Chromite and Ruby Physical Properties

Chromite

Ruby

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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

4.5-4.83.97-4.05

1 7.18

1.5 Fracture

Uneven

Conchoidal

1.6 Cleavage

None, parting may develop along {111}

No true cleavage

1.7 Mohs Hardness

5.59

2 10

1.8 Chemical Composition

Fe++Cr2O4

Al ₂ O ₃

Chromite and Ruby Chemical Formula

While comparing Chromite 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 Chromite and Ruby chemical formula.

Chemical formula of Chromite- Fe++Cr2O4
Chemical formula of Ruby- Al ₂ O ₃

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Chromite and Ruby Specific Gravity

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