Ruby and Cerussite Physical Properties

Ruby

Cerussite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.056.46-6.57

1 7.18

1.5 Fracture

Conchoidal

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

1.6 Cleavage

No true cleavage

Good [110] and [021]

1.7 Mohs Hardness

93-3.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

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

Ruby and Cerussite Chemical Formula

While comparing Ruby and Cerussite 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 Cerussite chemical formula.

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

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Ruby and Cerussite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Cerussite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Cerussite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 6.46-6.57 whereas that of Cerussite is 6.46-6.57.