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 ...

The Gravelotte emerald mine, which was in operation from 1929 to 2002 and was reportedly the world’s biggest emerald mine in its heyday, is once again in production, albeit initially on a very small ...

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R. Ringsrud. “Peñas Blancas: An Historic Colombian Emerald Mine,” The Journal of Gemmology, Vol. 33, No. 7–8, 2013, pp. 187–199. Photo courtesy of Edward Boehm. Emerald is the green variety of the ...

GRIZZLY by name, grisly by nature. Senegalese-owned family business Grizzly Mining flooded the Zambian emerald market to such ...

Local officials in Panjshir have announced the discovery of over 1,600 emerald mines in the province, with extraction ...

Uzbek companies have signed deals to extract oil in northern Afghanistan, according to the Ministry of Mines and Petroleum. The Taliban are already collecting tax from emerald sales. Under the ...

The GIA team collected tsavorite, spinel and sapphire rough, verifying and recording the precise origin of each sample ...