Albite and Gypsum Physical Properties
Tenacity
Brittle
  
Flexible
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.60-2.65
  
2.20-2.40
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal
  
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
  
Cleavage
Perfect on {001}, very good on {010}, imperfect on {110}
  
Perfect on {010}, distinct on {100}
  
Mohs Hardness
6-6.5
  
2
  
Chemical Composition
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
  
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
  
Albite and Gypsum Chemical Formula
While comparing Albite and Gypsum 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 Albite and Gypsum chemical formula.
- Chemical formula of Albite- NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Albite and Gypsum Specific Gravity
Another important criteria for qualitative analysis of gemstones is Albite and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Albite and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Albite is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.