Fluorite and Spinel Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
slightly water soluble and in hot hydrochloric acid
  
none
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.00-3.25
  
3.64-3.66
  
Fracture
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
  
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Octahedral, perfect on {111}, parting on {011}
  
None, but may exhibit slight parting
  
Mohs Hardness
4
  
8
  
Chemical Composition
CaF2
  
MgAl2O4
  
Fluorite and Spinel Chemical Formula
While comparing Fluorite 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 Fluorite and Spinel chemical formula.
- Chemical formula of Fluorite- CaF2
- Chemical formula of Spinel- MgAl2O4
Fluorite and Spinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Fluorite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fluorite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Fluorite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.