Turquoise and Prase Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.30-2.90
  
2.64-2.69
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006)
  
Cleavage
Good to perfect_usually N/A
  
Not Available
  
Mohs Hardness
5-6
  
7
  
Chemical Composition
CuAl6(PO4)4(OH)8 • 4H2O
  
SiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Turquoise and Prase Chemical Formula
While comparing Turquoise and Prase 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 Turquoise and Prase chemical formula.
- Chemical formula of Turquoise- CuAl6(PO4)4(OH)8 • 4H2O
- Chemical formula of Prase- SiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Turquoise and Prase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Turquoise and Prase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Turquoise and Prase Optical Properties during the identification of gemstone. Specific gravity of Turquoise is 2.64-2.69 whereas that of Prase is 2.64-2.69.