Prehnite and Turquoise Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.80-2.95
  
2.30-2.90
  
Fracture
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
  
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Cleavage
Distinct on [001]
  
Good to perfect_usually N/A
  
Mohs Hardness
6-6.5
  
5-6
  
Chemical Composition
Ca2Al2Si3O12(OH)
  
CuAl6(PO4)4(OH)8 • 4H2O
  
Prehnite and Turquoise Chemical Formula
While comparing Prehnite and Turquoise 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 Prehnite and Turquoise chemical formula.
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
- Chemical formula of Turquoise- CuAl6(PO4)4(OH)8 • 4H2O
Prehnite and Turquoise Specific Gravity
Another important criteria for qualitative analysis of gemstones is Prehnite and Turquoise Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prehnite and Turquoise Optical Properties during the identification of gemstone. Specific gravity of Prehnite is 2.30-2.90 whereas that of Turquoise is 2.30-2.90.