Corundum and Hackmanite Physical Properties
Tenacity
Brittle
Not Available
Solubility
insoluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.90-4.05
2.27-2.33
Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Cleavage
None – parting in 3 directions
Not Available
Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Corundum and Hackmanite Chemical Formula
While comparing Corundum and Hackmanite 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 Hackmanite chemical formula.
- Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Hackmanite- Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Corundum and Hackmanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Corundum and Hackmanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Hackmanite Optical Properties during the identification of gemstone. Specific gravity of Corundum is 2.27-2.33 whereas that of Hackmanite is 2.27-2.33.