Kosovo Turquoise Marriage Fashion Jewellery Ring Necklace 136

 Kosovo Turquoise Marriage Fashion Jewellery Ring Necklace.     

 By Aamir Mannan.

It strikes about N15°E and extends from the northern part of Elko County, southward down to the California border southwest of Tonopah. Nevada has produced a wide diversity of colours and mixes of different matrix patterns, with turquoise from Nevada coming in various shades of blue, blue-green, and green. 

Korea Republic (South Korea) Turquoise Marriage Fashion Jewellery Necklace 135

 Korea Republic (South Korea) Turquoise Marriage Fashion Jewellery Necklace.      

By Aamir Mannan.

While nearly every county in the state has yielded some turquoise, the chief producers are in Lander and Esmeralda Counties. Most of the turquoise deposits in Nevada occur along a wide belt of tectonic activity that coincides with the state's zone of thrust faulting.

Korea Democratic (North Korea) Turquoise Marriage Fashion Jewellery Necklace 134

 Korea Democratic (North Korea) Turquoise Marriage Fashion Jewellery Necklace.      

By Aamir Mannan.

Nevada turquoise is found as nuggets, fracture fillings and in breccias as the cement filling interstices between fragments. Because of the geology of the Nevada deposits, a majority of the material produced is hard and dense, being of sufficient quality that no treatment or enhancement is required.

Kiribati Turquoise Marriage Fashion Jewellery Necklace 133

Kiribati Turquoise Marriage Fashion Jewellery Necklace.      

By Aamir Mannan.

Nevada is the country's other major producer, with more than 120 mines which have yielded significant quantities of turquoise. Unlike elsewhere in the US, most Nevada mines have been worked primarily for their gem turquoise and very little has been recovered as a byproduct of other mining operations. 

Kenya Turquoise Marriage Fashion Jewellery Necklace 132

Kenya Turquoise Marriage Fashion Jewellery Necklace.     

 By Aamir Mannan.

The Phelps Dodge Lavender Pit mine at Bisbee ceased operations in 1974 and never had a turquoise contractor. All Bisbee turquoise was "lunch pail" mined. It came out of the copper ore mine in miners lunch pails. Morrenci and Turquoise Peak are either inactive or depleted.

Kazakhstan Turquoise Marriage Fashion Jewellery Earring Bracelet 131

Kazakhstan Turquoise Marriage Fashion Jewellery Earring Bracelet.      

By Aamir Mannan.

The Kingman Mine as of 2015 is still operates alongside a copper mine outside of the city. Other mines include the Blue Bird mine, Castle Dome, and Ithaca Peak, but they are mostly inactive due to the high cost of operations and federal regulations 

Jordan Turquoise Marriage Fashion Jewellery Ring Necklace 130

Jordan Turquoise Marriage Fashion Jewellery Ring Necklace.      

By Aamir Mannan.

The mine chose to send all ore to the crusher and to concentrate on copper production due to the rising price of copper on the world market. The price of natural untreated Sleeping Beauty turquoise has risen dramatically since the mines closing. 

Japan Turquoise Marriage Fashion Jewellery Earring Necklace 129

Japan Turquoise Marriage Fashion Jewellery Earring Necklace.      

By Aamir Mannan.

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 ceased turquoise mining in August of 2012.

Jamaica Turquoise Marriage Fashion Jewellery Ring Bracelet 128

Jamaica Turquoise Marriage Fashion Jewellery Ring Bracelet.      

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.

Iceland Turquoise Marriage Fashion Jewellery Mask Necklace 127

 Iceland Turquoise Marriage Fashion Jewellery Mask Necklace.      

By Aamir Mannan.

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.

Indian Turquoise Old Marriage Fashion Jewellery Bracelet Necklace 126

 Indian Turquoise old Marriage Fashion Jewellery Bracelet Necklace.      

By Aamir Mannan.

Untreated turquoise, Nevada USA. Rough nuggets from the McGinness Mine, Austin; Blue and green cabochons showing spiderweb, Bunker Hill Mine, Royston

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.

Hungary Turquoise Marriage Fashion Jewellery Bracelet Necklace 125

Hungary Turquoise Marriage Fashion Jewellery Bracelet Necklace.      

By Aamir Mannan.

A fine Turquoise specimen from Los Cerrillos, New Mexico at the Smithsonian. Cerrillos turquoise was widely used by Native Americans prior to the Spanish conquest.

Bisbee turquoise commonly has a hard chocolate brown coloured matrix.

Hong Kong Turquoise Marriage Fashion Jewellery Crown Necklace 124

Hong Kong Turquoise Marriage Fashion Jewellery Crown Necklace.      

By Aamir Mannan.

A selection of Ancestral Puebloan (Anasazi) turquoise and orange argillite inlay pieces from Chaco Canyon (dated ca. 1020–1140 CE) show the typical colour range and mottling of American turquoise. Some likely came from Cerrillos -- see next photo.

United States.

Honduras Turquoise Marriage Fashion Jewellery Bracelet 123

 Honduras Turquoise Marriage Fashion Jewellery Bracelet.      

By Aamir Mannan.

Often referred to as Egyptian turquoise, Sinai material is typically the most translucent, and under magnification its surface structure is revealed to be peppered with dark blue discs not seen in material from other localities.

Gabon Turquoise Marriage Fashion Jewellery Earring Ring Bracelet Necklace 122

 Gabon Turquoise Marriage Fashion Jewellery Earring Ring Bracelet Necklace.      

By Aamir Mannan.

In the rainy winter months, miners face a risk from flash flooding; even in the dry season, death from the collapse of the haphazardly exploited sandstone mine walls is not unheard of. The colour of Sinai material is typically greener than Iranian material, but is thought to be stable and fairly durable. 

Gambia Turquoise Marriage Fashion Jewellery Ring Necklace 121

Gambia Turquoise Marriage Fashion Jewellery Ring Necklace.      

By Aamir Mannan.

The turquoise is found in sandstone that is, or was originally, overlain by basalt. Copper and iron workings are present in the area. Large-scale turquoise mining is not profitable today, but the deposits are sporadically quarried by Bedouin peoples using homemade gunpowder.[citation needed]

Georgia Turquoise Old Marriage Fashion Jewellery Ring Necklace 120

Georgia Turquoise Old Marriage Fashion Jewellery Ring Necklace.     

 By Aamir Mannan.

There are six mines in the region, all on the southwest coast of the peninsula, covering an area of some 650 square kilometres (250 sq mi). The two most important of these mines, from a historic perspective, are Serabit el-Khadim and Wadi Maghareh, believed to be among the oldest of known mines. The former mine is situated about 4 kilometres from an ancient temple dedicated to Hathor.

Germany Turquoise Marriage Old Fashion Jewellery Ring 119

Germany Turquoise Marriage Old Fashion Jewellery Ring.      

By Aamir Mannan.
Sinai[edit]

Since at least the First Dynasty (3000 BCE), and possibly before then, turquoise was used by the Egyptians and was mined by them in the Sinai Peninsula, called "Country of Turquoise" by the native Monitu. 

Fiji Turquoise Marriage Fashion Jewellery Ring 118

 Fiji Turquoise Marriage Fashion Jewellery  Ring.      

By Aamir Mannan.

A weathered and broken trachyte is host to the turquoise, which is found both in situ between layers of limonite and sandstone, and amongst the scree at the mountain's base. These workings, together with those of the Sinai Peninsula, are the oldest known

Faroe Islands Turquoise Marriage Fashion Jewellery Ring 117

Faroe Islands Turquoise Marriage Fashion Jewellery Ring  

By Aamir Mannan.

Persian Turquoise from Iran

This deposit, which is blue naturally, and turns green when heated due to dehydration, is restricted to a mine-riddled region in Nishapur, the 2,012-metre (6,601 ft) mountain peak of Ali-mersai, which is tens of kilometers from Mashhad, the capital of Khorasan Province, Iran.