Turquoise and Williamsite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.30-2.90
  
2.51-2.63
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Conchoidal, Conchoidal, Handbook of mineralogy (2001)
  
Cleavage
Good to perfect_usually N/A
  
Not Available
  
Mohs Hardness
5-6
  
4
  
Chemical Composition
CuAl6(PO4)4(OH)8 • 4H2O
  
(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
  
Turquoise and Williamsite Chemical Formula
While comparing Turquoise and Williamsite 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 Williamsite chemical formula.
- Chemical formula of Turquoise- CuAl6(PO4)4(OH)8 • 4H2O
- Chemical formula of Williamsite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
Turquoise and Williamsite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Turquoise and Williamsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Turquoise and Williamsite Optical Properties during the identification of gemstone. Specific gravity of Turquoise is 2.51-2.63 whereas that of Williamsite is 2.51-2.63.