Semiprecious Stone Turquoise

CuAL6(PO4) 4(OH)8 *5(H2O) Some information for proffesional buyers
Turquoise is a secondary mineral formed under the influence of evaporating surface watersin typically arid regions. Found in botryidal masses, encrustations, nodules, veins seams and brecciated zones in igneous or meta-metasedimentaryrocks, it is associated minerals, limonite, pyrite and quarz.
Turquoise one of the earliest ggems to be used for personal endornment. It is use by rulers of Ancient Egyptcan be dated to around 5500BC.
The name of the gem is apprently related to the fact that it was brought to Europe from the Eastern Mediterranean by Levantine traders, generally known as Turks. It has served as an ornaments for a very long time. Nowadays, it is one of the most controversial gems, because of the materials sold has undergone so many different treatments that is original appearancehas beencompletely transformed.