Prasiolite and Alunite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.65
  
2.6-2.9
  
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Conchoidal, Uneven
  
Cleavage
3,1
  
On {0001}, perfect
  
Mohs Hardness
7
  
3.5-4
  
Chemical Composition
SiO 2Ulrich Henn and Claudio C.
  
KAl3(SO4)2(OH)6
  
Prasiolite and Alunite Chemical Formula
While comparing Prasiolite 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 Prasiolite and Alunite chemical formula.
- Chemical formula of Prasiolite- SiO 2Ulrich Henn and Claudio C.
- Chemical formula of Alunite- KAl3(SO4)2(OH)6
Prasiolite and Alunite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Prasiolite and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prasiolite and Alunite Optical Properties during the identification of gemstone. Specific gravity of Prasiolite is 2.6-2.9 whereas that of Alunite is 2.6-2.9.