Rutile and Corundum Physical Properties
Tenacity
Not Available
Brittle
Solubility
Insoluble in acids
insoluble
Durability
Not Available
Not Available
Specific Gravity
4.20-4.30
3.90-4.05
Fracture
Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Uneven, Gems, Difficult, Fibrous
Cleavage
{110} good, 100 moderate, parting on {092} and {011}
None – parting in 3 directions
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Al 2O 3Arthur Thomas , Gemstones (2009)
Rutile and Corundum Chemical Formula
While comparing Rutile and Corundum 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 Rutile and Corundum chemical formula.
- Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
Rutile and Corundum Specific Gravity
Another important criteria for qualitative analysis of gemstones is Rutile and Corundum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rutile and Corundum Optical Properties during the identification of gemstone. Specific gravity of Rutile is 3.90-4.05 whereas that of Corundum is 3.90-4.05.