Cinnabar and Calcite 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)
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2
  
2.67-2.73
  
Fracture
Uneven, Uneven, Gemstones (2009), Brittle
  
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Cleavage
Prismatic {10 1 0}, perfect
  
Perfect on [10 1 1] three directions with angle of 74° 55
  
Mohs Hardness
2-2.5
  
3
  
Chemical Composition
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
CaCO 3Ulrich Henn and Claudio C.
  
Cinnabar and Calcite Chemical Formula
While comparing Cinnabar and Calcite 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 Calcite chemical formula.
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Cinnabar and Calcite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cinnabar and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Calcite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 2.67-2.73 whereas that of Calcite is 2.67-2.73.