Alabaster and Spinel Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
none
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.30
  
3.64-3.66
  
Fracture
Not Available
  
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Not Available
  
None, but may exhibit slight parting
  
Mohs Hardness
2
  
8
  
Chemical Composition
CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)
  
MgAl2O4
  
Alabaster and Spinel Chemical Formula
While comparing Alabaster and Spinel 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 Alabaster and Spinel chemical formula.
- Chemical formula of Alabaster- CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)
- Chemical formula of Spinel- MgAl2O4
Alabaster and Spinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Alabaster and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alabaster and Spinel Optical Properties during the identification of gemstone. Specific gravity of Alabaster is 3.64-3.66 whereas that of Spinel is 3.64-3.66.