Caledonite and Smithsonite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
5.6-5.76
  
4.00-4.65
  
Fracture
Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)
  
Uneven, Sub-Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
  
Cleavage
[001] perfect; [100] distinct
  
Perfect on [1011]
  
Mohs Hardness
2.5-3
  
5-5.5
  
Chemical Composition
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
  
ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Caledonite and Smithsonite Chemical Formula
While comparing Caledonite and Smithsonite 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 Caledonite and Smithsonite chemical formula.
- Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Smithsonite- ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Caledonite and Smithsonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Caledonite and Smithsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Smithsonite Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 4.00-4.65 whereas that of Smithsonite is 4.00-4.65.