South America : Brazil : Minas Gerais, Brazil's top producer along with Bahia, Ceara, Goias and Tocantius Emerald : the most valuable beryl : the most precious gemstone Schwarz, D. /Giuliani, Gaston PETROGRAPHIE MINERAL BERYLIUM MINE REPARTITION GEOGRAPHIQUE Lapis International /Giuliani, Gaston (ed.) Jarnot, M. (ed.) Neumeier, G. (ed.) Ottaway, T. (ed.) Sinkankas, J. (ed.) Staebler, G. (ed.) 2002 text https://www.documentation.ird.fr/hor/fdi:010030129 fdi:010030129 Schwarz D., Giuliani Gaston, . South America : Brazil : Minas Gerais, Brazil's top producer along with Bahia, Ceara, Goias and Tocantius. In : Giuliani Gaston (ed.), Jarnot M. (ed.), Neumeier G. (ed.), Ottaway T. (ed.), Sinkankas J. (ed.), Staebler G. (ed.), . Emerald : the most valuable beryl : the most precious gemstone Lapis International, ; 2). 2002, 46-51 EN BRESIL MINAS GERAIS BAHIA CEARA GOIAS TOCANTINS