Ruby and Aragonite Physical Properties

Ruby

Aragonite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Dilute acid

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.052.93-2.96

1 7.18

1.5 Fracture

Conchoidal

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

1.6 Cleavage

No true cleavage

Distinct on {010}, imperfect {110} and {011}

1.7 Mohs Hardness

93.5-4

2 10

1.8 Chemical Composition

Al ₂ O ₃

CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Ruby and Aragonite Chemical Formula

While comparing Ruby and Aragonite 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 Aragonite chemical formula.

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

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Ruby and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.