Ruby and Pyrite Physical Properties

Ruby

Pyrite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

insoluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.055.00-5.20

1 7.18

1.5 Fracture

Conchoidal

Uneven, Conchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle

1.6 Cleavage

No true cleavage

Indistinct on {001}; partings on {011} and {111}

1.7 Mohs Hardness

96-6.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

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

Ruby and Pyrite Chemical Formula

While comparing Ruby and Pyrite 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 Pyrite chemical formula.

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

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Ruby and Pyrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Pyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Pyrite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 5.00-5.20 whereas that of Pyrite is 5.00-5.20.