Turquoise Feroza Birthstone Fashion Women Wedding Jewellery Dominica 15

 Turquoise Feroza Birthstone Fashion Women Wedding Jewellery Dominica.

 By Aamir Mannan

The turquoise occurs as vein or seam fillings, and as compact nuggets; these are mostly small in size. While quite fine material is sometimes found—rivalling Iranian material in both colour and durability—most American turquoise is of a low grade (called "chalk turquoise"); high iron levels mean greens and yellows predominate, and a typically friable consistency in the turquoise's untreated state precludes use in jewellery .

Arizona is currently the most important producer of turquoise by value.[5] Several mines exist in the state, two of them famous for their unique colour and quality and considered the best in the industry: the Sleeping Beauty Mine in Globe, and the Kingman Mine that operates alongside a copper mine outside of the city. Other active mines include the Blue Bird mine, Castle Dome, and Ithaca Peak. The mines at Morenci, Bisbee, and Turquoise Peak are either inactive or depleted.