Malachite and Realgar Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.25-4.10
  
3.56
  
Fracture
Conchoidal, Conchoidal, Gemstones (2009), Uneven
  
(e.g. graphite).
  
Cleavage
Perfect on { 2 01} fair on {010}
  
{010} Good
  
Mohs Hardness
3.5-4
  
Not Available
  
Chemical Composition
Cu2CO3(OH)2
  
AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Malachite and Realgar Chemical Formula
While comparing Malachite 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 Malachite and Realgar chemical formula.
- Chemical formula of Malachite- Cu2CO3(OH)2
- Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Malachite and Realgar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Malachite and Realgar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Realgar Optical Properties during the identification of gemstone. Specific gravity of Malachite is 3.56 whereas that of Realgar is 3.56.