Gypsum and Chiastolite Physical Properties
Tenacity
Flexible
  
Not Available
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.20-2.40
  
3.00-3.15
  
Fracture
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
  
Not Available
  
Cleavage
Perfect on {010}, distinct on {100}
  
Not Available
  
Mohs Hardness
2
  
5-5.5
  
Chemical Composition
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
  
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)
  
Gypsum and Chiastolite Chemical Formula
While comparing Gypsum and Chiastolite 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 Chiastolite chemical formula.
- Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
- Chemical formula of Chiastolite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)
Gypsum and Chiastolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gypsum and Chiastolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gypsum and Chiastolite Optical Properties during the identification of gemstone. Specific gravity of Gypsum is 3.00-3.15 whereas that of Chiastolite is 3.00-3.15.