Corundum and Narsarsukite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.90-4.05
  
2.72-2.83
  
Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
  
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
  
Cleavage
None – parting in 3 directions
  
Good on {100} and {110}
  
Mohs Hardness
9
  
6-7
  
Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
  
Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.
  
Corundum and Narsarsukite Chemical Formula
While comparing Corundum and Narsarsukite 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 Narsarsukite chemical formula.
- Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Narsarsukite- Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.
Corundum and Narsarsukite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Corundum and Narsarsukite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Narsarsukite Optical Properties during the identification of gemstone. Specific gravity of Corundum is 2.72-2.83 whereas that of Narsarsukite is 2.72-2.83.