Mighty Mineral

About Turquoise

  • Chemical Formula: CuAl6(Po4)4(OH8)*5(H2O)

  • Mineral Group: Phosphates
  • Hardness: 5-6

  • Specific Gravity: 2.6 - 2.8
  • Transparency: Specimens are Opaque
  • Colors: Turquoise, but the color varies from greenish blue to sky blue shades
  • Streak: White with a green tint
  • Luster: Dull to waxy
  • Cleavage: Perfect in two directions, but is not seen often
  • Fracture: Smooth

Important Uses

  • Turquoise is mostly used for jewlery


  • The finest Turquoise can be found Iran
  • Turquoise is Iran national gemstone
  • Turquoise is a valuable mineral and is possibly the most valuable , non transparent , mineral in jewelry trade
  • Turquoise is usually imitated by fakes , like the mineral Chyscolla