Amethyst and Ajoite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
insoluble in common solvents
  
Decomposed by acids
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.65
  
2.96
  
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Not Available
  
Cleavage
Indiscernible
  
Perfect on {010}
  
Mohs Hardness
7
  
5
  
Chemical Composition
SiO2
  
(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)
  
Amethyst and Ajoite Chemical Formula
While comparing Amethyst and Ajoite 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 Amethyst and Ajoite chemical formula.
- Chemical formula of Amethyst- SiO2
- Chemical formula of Ajoite- (K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)
Amethyst and Ajoite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Amethyst and Ajoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Ajoite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 2.96 whereas that of Ajoite is 2.96.