Corundum and Azurite Physical Properties
Solubility
insoluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.90-4.05
3.70-3.90
Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
None – parting in 3 directions
Perfect on {011}, fair on {100}, poor on {110}
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
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.