Sylvite and Leucite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
1.993
  
2.45-2.50
  
Fracture
Uneven, Brittle
  
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Cleavage
Perfect on [100], [010], [001]
  
Poor on {110}
  
Mohs Hardness
2.5
  
5.5-6
  
Chemical Composition
Not Available
  
KAlSi 2O 6Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Sylvite and Leucite Chemical Formula
While comparing Sylvite and Leucite 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 Sylvite and Leucite chemical formula.
>- Chemical formula of Leucite- KAlSi 2O 6Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Sylvite and Leucite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sylvite and Leucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sylvite and Leucite Optical Properties during the identification of gemstone. Specific gravity of Sylvite is 2.45-2.50 whereas that of Leucite is 2.45-2.50.