Mojave Blue Turquoise Ring in .925 Sterling Silver Nickel Free (Size 7)

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Mojave Blue Turquoise Ring in .925 Sterling Silver Nickel Free (Size 7) :
$22.99

Mojave Blue Turquoise (Cush) Ring in Sterling Silver Nickel Free (Size 7) TGW 2.41 cts.
December\'s birthstone, Turquoise was among the first gemstones ever mined. Turquoise\'s stunning sky blue color combined with a stimulating sea green has made Turquoise one of the most popular color trends in jewelry history. Turquoise\'s color is due to the element copper. Treasured since the early Egyptian civilization, for thousands of years, Turquoise has been known for bringing good fortune and happiness.Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula CuAl6(PO4)4(OH)8·4H2O. It is rare and valuable in finer grades and has been prized as a gem and ornamental stone for thousands of years owing to its unique hue. In recent times, turquoise, like most other opaque gems, has been devalued by the introduction of treatments, imitations, and synthetics onto the market.The substance has been known by many names, but the word turquoise, which dates to the 16th century, is derived from an Old French word for \"Turkish\", because the mineral was first brought to Europe from Turkey, from the mines in historical Khorasan Province of Iran. Pliny the Elder referred to the mineral as callais, the Iranians named it \"phirouzeh\" and the Aztecs knew it as Teoxihuitl.The Southwest United States is a significant source of turquoise; Arizona, California (San Bernardino, Imperial, Inyo counties), Colorado (Conejos, El Paso, Lake, Saguache counties), New Mexico (Eddy, Grant, Otero, Santa Fe counties) Nevada (Clark, Elko, Esmeralda County, Eureka, Lander, Mineral County and Nye counties) are (or were) especially rich. The deposits of California and New Mexico were mined by pre-Columbian Native Americans using stone tools, some local and some from as far away as central Mexico. Cerrillos, New Mexico is thought to be the location of the oldest mines; prior to the 1920s, the state was the country\'s largest producer; it is more or less exhausted today. Only one mine in California, located at Apache Canyon, operates at a commercial capacity today.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. 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.
#9Vendors Estimated Retail Value $179.99