Turquoise

Hydrated phosphates of copper and aluminum produce sky-blue turquoise, but with iron it becomes more green in color. It must be protected to retain its waxy surface, color and magical properties.

• Period: O
  • Copper Hydroxyls
  • Hardness: 5-6
• Group: Group IIIA?

See also Matter, Gems, B and Copper Hydroxyls.

— Scotus - 30 Dec 2001