Carnelian and Spinel Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
none
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.58-2.64
  
3.64-3.66
  
Fracture
Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
  
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Absent
  
None, but may exhibit slight parting
  
Mohs Hardness
6.5-7
  
8
  
Chemical Composition
SiO2
  
MgAl2O4
  
Carnelian and Spinel Chemical Formula
While comparing Carnelian 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 Carnelian and Spinel chemical formula.
- Chemical formula of Carnelian- SiO2
- Chemical formula of Spinel- MgAl2O4
Carnelian and Spinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Carnelian and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Carnelian and Spinel Optical Properties during the identification of gemstone. Specific gravity of Carnelian is 3.64-3.66 whereas that of Spinel is 3.64-3.66.