Malachite and Topaz Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.25-4.10
  
3.49-3.57
  
Fracture
Conchoidal, Conchoidal, Gemstones (2009), Uneven
  
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Cleavage
Perfect on { 2 01} fair on {010}
  
[001] Perfect
  
Mohs Hardness
3.5-4
  
8
  
Chemical Composition
Cu2CO3(OH)2
  
Al2SiO4(F,OH)2
  
Malachite and Topaz Chemical Formula
While comparing Malachite and Topaz 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 Topaz chemical formula.
- Chemical formula of Malachite- Cu2CO3(OH)2
- Chemical formula of Topaz- Al2SiO4(F,OH)2
Malachite and Topaz Specific Gravity
Another important criteria for qualitative analysis of gemstones is Malachite and Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Topaz Optical Properties during the identification of gemstone. Specific gravity of Malachite is 3.49-3.57 whereas that of Topaz is 3.49-3.57.