Stolzite and Hackmanite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2
  
2.27-2.33
  
Fracture
Conchoidal, Uneven, Brittle
  
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
  
Cleavage
Imperfect on {001}, indistinct on {011}
  
Not Available
  
Mohs Hardness
2.5-3
  
5.5-6
  
Chemical Composition
Not Available
  
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Stolzite and Hackmanite Chemical Formula
While comparing Stolzite 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 Stolzite and Hackmanite chemical formula.
>- Chemical formula of Hackmanite- Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Stolzite and Hackmanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Stolzite and Hackmanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Stolzite and Hackmanite Optical Properties during the identification of gemstone. Specific gravity of Stolzite is 2.27-2.33 whereas that of Hackmanite is 2.27-2.33.