Willemite and Cuprite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.89-4.18
  
5.85-6.15
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven
  
Conchoidal, Metallic, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Cleavage
{0001}, {11 2 0} imperfect
  
Fair in four directions forming octahedrons
  
Mohs Hardness
5.5
  
3.5-4
  
Chemical Composition
Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Willemite and Cuprite Chemical Formula
While comparing Willemite and Cuprite 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 Willemite and Cuprite chemical formula.
- Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Cuprite- Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Willemite and Cuprite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Willemite and Cuprite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Willemite and Cuprite Optical Properties during the identification of gemstone. Specific gravity of Willemite is 5.85-6.15 whereas that of Cuprite is 5.85-6.15.