Corundum and Azurite Physical Properties

Corundum

Azurite

Add ⊕

1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.90-4.053.70-3.90

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Difficult, Fibrous

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

1.6 Cleavage

None – parting in 3 directions

Perfect on {011}, fair on {100}, poor on {110}

1.7 Mohs Hardness

93.5-4

2 10

1.8 Chemical Composition

Al 2O 3Arthur Thomas , Gemstones (2009)

Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Corundum and Azurite Chemical Formula

While comparing Corundum and Azurite 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 Corundum and Azurite chemical formula.

Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Azurite- Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Violet Gemstones

Corundum Vs Hackmanite

Corundum Vs Hexagonite

Corundum Vs Garnet

Corundum and Azurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Corundum and Azurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Azurite Optical Properties during the identification of gemstone. Specific gravity of Corundum is 3.70-3.90 whereas that of Azurite is 3.70-3.90.