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  • Top Ten Diamond Companies in the World - Petra Gems

    The Ten Largest Diamond Manufacturers and Traders in the World Check out James Allen's Diamond 3D HD Technology Here. The diamond trade brings hundreds of thousands of people together from all around the globe. From individual miners cutting up rocks in search of the elusive gem, to the corporations that employ them, to the ...

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  • Company | EMR | Emerald Resources News, Analysis ...

    The latest Emerald Resources news, articles, ... Woodside Petroleum gained 3 per cent and goldminer Newcrest Mining fell 2 per cent. ... Karoon, which explores for oil and gas in Australia and South America, went into a trading halt on Friday pending the completion of a share placement.

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  • The Lust for Colombian Emeralds Continues to remain strong

    The Colombian emerald industry is strong, steeped in proud tradition, and with a long and drawn out history. Considered one of the country's national symbols, emeralds date back to the late 16th century, and today the Colombian emerald sector is one of the most elusive yet lucrative for

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  • Brazil's Emerald Industry | Gems & Gemology

    Figure 1. Open-pit mining at Belmont is conducted on a large scale. Trucks are constantly being filled with ore to be taken to the processing plant. Photo by A. Lucas. Since the 1970s, Brazil has been a consistent source of emerald. This is especially true today, with steady production from the

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  • Emerald Energy PLC (Emerald) - BNamericas

    UK-based Emerald Energy PLC is a company engaged on oil and gas exploration in the Middle East and South America. In Colombia, through its subsidiary Emerald Energy Colombia the company has ongoing explorations in Nogal, Manzano and Cardón fields and in the Ca...

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  • Emerald - Geology

    Emerald Mining in the United States. Very few emeralds have been mined in the United States. North Carolina has been a sporadic producer of emeralds in small quantities from a few tiny mines since the late 1800s. The Crabtree Emerald Mine was once operated by Tiffany and Company and a series of property owners between 1894 and the 1990s.

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  • Emerald: Mineral information, data and localities.

    Emerald has priority over beryl as a mineral name. Emerald was known in antiquity and was prized as a gem. In the 1790s, Louis Nicolas Vauquelin, the discoverer of chromium, demonstrated that emerald and beryl were essentially the same chemical compound and .

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  • Emerald Mine - SourceWatch

    In December 2012 the citizens group Center for Coalfield Justice sued Emerald Mine operator Emerald Coal Resources LP for polluting key waterways — including at least one high-quality fishing stream — that feed the Monongahela River.

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  • Rist Mine (North America Emerald Mine; American Gems Mine ...

    Operated by Emerald Valley Mines (ID: 3101636) (1978). MRDS database stated accuracy for this location is 100 meters. Originally known as the Rist Mine, but also known as American Gems Mine, LKA International Emerald Mine, and recently (since 1995), the North American Emerald Mine.

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  • Company walks fine line to revive Colombia emerald mine

    Fura Gems, the first listed emerald miner to operate in Colombia, has $10 million invested to date. The company, based in Dubai and listed in Canada, faces a community relations test as it tries to rehabilitate Coscuez, the country's top producer until sometime after 1998, as declining investment and outdated mining methods eroded output.

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  • List of DIAMONDS mining companies.

    List of DIAMONDS mining companies with access to company profiles, projects, resources and reserves and technical analysis.

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  • Opportunities for Mining Service Companies in Latin America

    With well-developed coal, gold and emerald mining sectors, the country provides investors with attractive opportunities for mining service companies – with countries such as the US, Canada, Australia, China and Russia seen as being able to add value and become

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  • EmeraldStone :: History

    Five unnamed large emerald crystals from Muzo are located in the vault of the Bank of the Republic of Colombia and they weigh between 1,100 carats to 1,796 carats, as well as one weighing 220 carats. A Russian emerald in the Los Angelos Museum of Natural History weighs 1,965 carats.

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  • This is a list of American Turquoise Mines in the ...

    This page features a list of the prominent turquoise mines in the Southwest United States. Most of the turquoise mines highlighted on this page are located in Arizona, Nevada, Colorado, and New Mexico. Mines explored include Morenci Turquoise, Bisbee Turquoise, .

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  • Former Gemfields exc.-led firm grabs Coscuez emerald mine ...

    The emerald market is closely linked to Colombia's history and identity. In 1966, 95% of the green stones were mined in the South American country, particularly at Coscuez. But in the late 1970s and 1980s the region became immersed in the so-called "Green Wars," triggered by country's leading mining families battling over territory.

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  • Colombian emeralds - Wikipedia

    https://en.wikipedia/wiki/Colombian_EmeraldsOverview
  • Fifty carat emerald uncovered - Australian Mining

    An amateur mining couple has uncovered a 50.5 carat emerald during weekend prospecting. Kevin and Libby Barrieault from North Carolina in the US found the emerald at the North American emerald mine in Hiddenite after only five minutes of mining, according to the Charlotte Observer.

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  • Emerald: Title Detail: Cooperative Strategies and ...

    Reflects the state-of-the-art research in the alliance field. This work contains papers presented at a conference hosted by Professors Contractor and Lorange and held at Rutgers University, USA. It is intended for academics, policy makers, consultants and strategists involved in strategic alliances.

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