Cassiterite and Realgar Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
6.86-7.03
  
3.56
  
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
  
(e.g. graphite).
  
Cleavage
{100} imperfect, {110} indistinct; partings on {111} or {011}
  
{010} Good
  
Mohs Hardness
6-7
  
Not Available
  
Chemical Composition
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Cassiterite and Realgar Chemical Formula
While comparing Cassiterite and Realgar 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 Cassiterite and Realgar chemical formula.
- Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Cassiterite and Realgar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cassiterite and Realgar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cassiterite and Realgar Optical Properties during the identification of gemstone. Specific gravity of Cassiterite is 3.56 whereas that of Realgar is 3.56.