The most striking feature of this mineral is its greenish blue color, which has become known as turquoise blue precisely because of this mineral. It is very fragile and considered of the utmost rarity. In Spain, deposits have been found in Cáceres, Córdoba and Murcia. You have all the information in: «List of the most precious rocks and minerals on the planet«.
You have all the information in: "List of the most precious rocks and minerals on the planet".