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