Cinnabar and Cassiterite 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)
  
insoluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2
  
6.86-7.03
  
Fracture
Uneven, Uneven, Gemstones (2009), Brittle
  
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
  
Cleavage
Prismatic {10 1 0}, perfect
  
{100} imperfect, {110} indistinct; partings on {111} or {011}
  
Mohs Hardness
2-2.5
  
6-7
  
Chemical Composition
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Cinnabar and Cassiterite Chemical Formula
While comparing Cinnabar and Cassiterite 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 Cassiterite chemical formula.
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cinnabar and Cassiterite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cinnabar and Cassiterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Cassiterite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 6.86-7.03 whereas that of Cassiterite is 6.86-7.03.