Star Sapphire and Turquoise Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.90-4.05
  
2.30-2.90
  
Fracture
Not Available
  
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Cleavage
Not Available
  
Good to perfect_usually N/A
  
Mohs Hardness
Not Available
  
5-6
  
Chemical Composition
Al 2O 3Ulrich Henn and Claudio C.
  
CuAl6(PO4)4(OH)8 • 4H2O
  
Star Sapphire and Turquoise Chemical Formula
While comparing Star Sapphire 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 Star Sapphire and Turquoise chemical formula.
- Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
- Chemical formula of Turquoise- CuAl6(PO4)4(OH)8 • 4H2O
Star Sapphire and Turquoise Specific Gravity
Another important criteria for qualitative analysis of gemstones is Star Sapphire and Turquoise Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Turquoise Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 2.30-2.90 whereas that of Turquoise is 2.30-2.90.