Malachite and Star Sapphire Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.25-4.10
  
3.90-4.05
  
Fracture
Conchoidal, Conchoidal, Gemstones (2009), Uneven
  
Not Available
  
Cleavage
Perfect on { 2 01} fair on {010}
  
Not Available
  
Mohs Hardness
3.5-4
  
Not Available
  
Chemical Composition
Cu2CO3(OH)2
  
Al 2O 3Ulrich Henn and Claudio C.
  
Malachite and Star Sapphire Chemical Formula
While comparing Malachite and Star Sapphire 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 Star Sapphire chemical formula.
- Chemical formula of Malachite- Cu2CO3(OH)2
- Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
Malachite and Star Sapphire Specific Gravity
Another important criteria for qualitative analysis of gemstones is Malachite and Star Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Star Sapphire Optical Properties during the identification of gemstone. Specific gravity of Malachite is 3.90-4.05 whereas that of Star Sapphire is 3.90-4.05.