Willemite and Jasper Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.89-4.18
  
2.58-2.91
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven
  
Conchoidal, Conchoidal, Gemstones of the world (2001)
  
Cleavage
{0001}, {11 2 0} imperfect
  
Indiscernible
  
Mohs Hardness
5.5
  
6.5-7
  
Chemical Composition
Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
SiO2
  
Willemite and Jasper Chemical Formula
While comparing Willemite and Jasper 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 Jasper chemical formula.
- Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Jasper- SiO2
Willemite and Jasper Specific Gravity
Another important criteria for qualitative analysis of gemstones is Willemite and Jasper Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Willemite and Jasper Optical Properties during the identification of gemstone. Specific gravity of Willemite is 2.58-2.91 whereas that of Jasper is 2.58-2.91.