Malachite and Chalcedony Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.25-4.10
  
2.55-2.70
  
Fracture
Conchoidal, Conchoidal, Gemstones (2009), Uneven
  
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
  
Cleavage
Perfect on { 2 01} fair on {010}
  
Absent
  
Mohs Hardness
3.5-4
  
6.5-7
  
Chemical Composition
Cu2CO3(OH)2
  
SiO2
  
Malachite and Chalcedony Chemical Formula
While comparing Malachite and Chalcedony 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 Chalcedony chemical formula.
- Chemical formula of Malachite- Cu2CO3(OH)2
- Chemical formula of Chalcedony- SiO2
Malachite and Chalcedony Specific Gravity
Another important criteria for qualitative analysis of gemstones is Malachite and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Malachite is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.