Spinel and Marialite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
none
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.64-3.66
  
2.50
  
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
  
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
  
Cleavage
None, but may exhibit slight parting
  
Distinct on {100} and {110}
  
Mohs Hardness
8
  
5.5-6
  
Chemical Composition
MgAl2O4
  
3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
  
Spinel and Marialite Chemical Formula
While comparing Spinel and Marialite 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 Spinel and Marialite chemical formula.
- Chemical formula of Spinel- MgAl2O4
- Chemical formula of Marialite- 3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
Spinel and Marialite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Spinel and Marialite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Marialite Optical Properties during the identification of gemstone. Specific gravity of Spinel is 2.50 whereas that of Marialite is 2.50.