Turquoise, the best mineral around!

Cynthia Gallegos


Turquoise is possibly the most valuable mineral in the jewelry trade. It's been around since 6000 BC. The finest Turquoise is found in Iran but can be found in Virginia and elsewhere.

Kinds of Turquoise

About Turquoise

  • Formula: CuAl6(PO4)4(OH)8*5(H2O)
  • Color is of course, turquoise, but this color actually varies from greenish blue to sky blue shades.
  • Luster is dull to waxy, vitreous in macro-crystals.
  • Transparency specimens are opaque.
  • Cleavage is perfect in two direction, but is not often seen.
  • Fracture is conchoidal and smooth.
  • Hardness is 5 - 6
  • Streak is white with a greenish tint.

More Minerals


  • Formula: C
  • Color is pale yellows, browns, grays, and also white, blue, black, reddish, greenish and colorless.
  • Luster is adamantine to waxy.
  • Transparency crystals are transparent to translucent in rough crystals.
  • Hardness is 10
  • Cleavage is perfect in 4 directions forming octahedrons.
  • Fracture is conchoidal.
  • Streak is white.

Diamond is Aprils birthstone. It is the ultimate gemstone with many strengths. Also, it is my Birthstone. It is very common is the jewelry trade.