Shigaite and Cinnabar Physical Properties
Tenacity
Moderately flexible
  
Slightly sectile
  
Solubility
Not Available
  
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.32
  
2
  
Fracture
Flexible Flexible fragments.
  
Uneven, Uneven, Gemstones (2009), Brittle
  
Cleavage
Perfect on {0001}
  
Prismatic {10 1 0}, perfect
  
Mohs Hardness
2
  
2-2.5
  
Chemical Composition
Not Available
  
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Shigaite and Cinnabar Chemical Formula
While comparing Shigaite and Cinnabar 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 Shigaite and Cinnabar chemical formula.
>- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Shigaite and Cinnabar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Shigaite and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Shigaite and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Shigaite is 2 whereas that of Cinnabar is 2.