Ruby and Cassiterite Physical Properties

Ruby

Cassiterite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.056.86-7.03

1 7.18

1.5 Fracture

Conchoidal

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular

1.6 Cleavage

No true cleavage

{100} imperfect, {110} indistinct; partings on {111} or {011}

1.7 Mohs Hardness

96-7

2 10

1.8 Chemical Composition

Al ₂ O ₃

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

Ruby and Cassiterite Chemical Formula

While comparing Ruby and Cassiterite 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 Cassiterite chemical formula.

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

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Ruby and Cassiterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Cassiterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Cassiterite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 6.86-7.03 whereas that of Cassiterite is 6.86-7.03.