Cinnabar and Diopside Physical Properties
Tenacity
Slightly sectile
  
Brittle
  
Solubility
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2
  
3.22-3.40
  
Fracture
Uneven, Uneven, Gemstones (2009), Brittle
  
Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
  
Cleavage
Prismatic {10 1 0}, perfect
  
Distinct/good on {110}
  
Mohs Hardness
2-2.5
  
5-6
  
Chemical Composition
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
CaMgSi2O6
  
Cinnabar and Diopside Chemical Formula
While comparing Cinnabar and Diopside 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 Cinnabar and Diopside chemical formula.
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Diopside- CaMgSi2O6
Cinnabar and Diopside Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cinnabar and Diopside Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Diopside Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 3.22-3.40 whereas that of Diopside is 3.22-3.40.