Glass and Alunite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.39-4.00
  
2.6-2.9
  
Fracture
ConchoidalGemdat.org, Management Team (2012), ConchoidalGemdat.org, Management Team (2012)
  
Conchoidal, Uneven
  
Cleavage
Not Available
  
On {0001}, perfect
  
Mohs Hardness
4-6
  
3.5-4
  
Chemical Composition
Not Available
  
KAl3(SO4)2(OH)6
  
Glass and Alunite Chemical Formula
While comparing Glass and Alunite 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 Glass and Alunite chemical formula.
>- Chemical formula of Alunite- KAl3(SO4)2(OH)6
Glass and Alunite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Glass and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Glass and Alunite Optical Properties during the identification of gemstone. Specific gravity of Glass is 2.6-2.9 whereas that of Alunite is 2.6-2.9.