Corundum and Friedelite Physical Properties
Tenacity
Brittle
Not Available
Solubility
insoluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.90-4.05
3.06-3.19
Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven
Cleavage
None – parting in 3 directions
{010} Perfect
Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
Corundum and Friedelite Chemical Formula
While comparing Corundum and Friedelite 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 Friedelite chemical formula.
- Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
Corundum and Friedelite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Corundum and Friedelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Friedelite Optical Properties during the identification of gemstone. Specific gravity of Corundum is 3.06-3.19 whereas that of Friedelite is 3.06-3.19.