Gypsum and Ajoite Physical Properties
Tenacity
Flexible
  
Not Available
  
Solubility
Soluble
  
Decomposed by acids
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.20-2.40
  
2.96
  
Fracture
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
  
Not Available
  
Cleavage
Perfect on {010}, distinct on {100}
  
Perfect on {010}
  
Mohs Hardness
2
  
5
  
Chemical Composition
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
  
(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)
  
Gypsum and Ajoite Chemical Formula
While comparing Gypsum 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 Gypsum and Ajoite chemical formula.
- Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
- Chemical formula of Ajoite- (K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)
Gypsum and Ajoite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gypsum and Ajoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gypsum and Ajoite Optical Properties during the identification of gemstone. Specific gravity of Gypsum is 2.96 whereas that of Ajoite is 2.96.