 | Duarte, Lauren C., Hartmann, Leo A., Ronchi, Luiz H., Berner, Zsolt, Theye, Thomas, Massonne, Hans J. (2011) Stable isotope and mineralogical investigation of the genesis of amethyst geodes in the Los Catalanes gemological district, Uruguay, southernmost ParanĂĄ volcanic province. Mineralium Deposita, 46 (3) 239-255 doi:10.1007/s00126-010-0323-6 | Journal (article/letter/editorial) | | Uruguayan deposits than in the Ametista do Sul area of southern Brazil. The range of ÎŽ34S values (â15.0 to...and agate geodes (600 tons/month) are Brazil (Ametista do Sul) and Uruguay (Los Catalanes). The cylindrical...Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil e-mail: lauren.duarte@ufrgs...Federal do Rio Grande do Sul, Avenida Bento Gonçalves, 950091501-970, Porto Alegre, Rio Grande do Sul, Brazil...Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil e-mail: lrronchi@uol.com.br Z. Berner |  | Hartmann, LĂ©o Afraneo, da Cunha Duarte, Lauren, Massonne, Hans-Joachim, Michelin, Cassiana, Rosenstengel, Leonardo Manara, Bergmann, Magda, Theye, Thomas, Pertille, Juliana, Arena, Karine Rosa, Duarte, Sandro Kucera, Pinto, Viter MagalhĂŁes, Barboza, Eduardo GuimarĂŁes, Rosa, Maria Luiza C.C., Wildner, Wilson (2012) Sequential opening and filling of cavities forming vesicles, amygdales and giant amethyst geodes in lavas from the southern ParanĂĄ volcanic province, Brazil and Uruguay. International Geology Review, 54 (1) 1-14 doi:10.1080/00206814.2010.496253 | Journal (article/letter/editorial) | | lavas from the southern ParanĂĄ volcanic province, Brazil and Uruguay a b c LĂ©o Afraneo Hartmann , Lauren...Federal do Rio Grande do Sul, Avenida Bento Gonçalves, Porto Alegre, Rio Grande do Sul, Brazil b Departamento...Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil c Institut fĂŒr Kristallchemie...Geological Survey of Brazil (CPRM), Rua Banco da ProvĂncia, Porto Alegre, Rio Grande do Sul, Brazil e Departamento...Geologia, Universidade Federal da Roraima, Rio Branco, Roraima, Brazil Published online: 06 Aug 2010. To cite |  | | Journal (issue) | | Articles 708 Coloured Stone Mining and Trade in Brazil: A Brief History and Current Status By AurĂ©lien...Collection V. L. Villani photo p. 758 Cover Photo: Brazil is the source of a variety of coloured stones,...Saint-Clair Fonseca Junior (BC Gemas do Brasil, Governador Valadares, Brazil), and heating to 500°C in air was...material, it is likely to have been Rio Grande do Sul in Brazil, well known for its amethyst, agate and...Trade in Brazil: A Brief History and Current Status AurĂ©lien Reys Coloured stones from Brazil have been |  | | Journal (issue) | | Is it a place where your customers want to be? âą Do your salespeople spend 70% of their time on customersâ...customersâ rational needs or on their emotional desires? âą Do you transform the purchase experience into an experience...usually have something very specific in mind and do not want a sales pitch, while Russian shoppers tend...when the head of Paramount Pictures asked him to do it as a favor, Katz obliged, asking to receive credit...jewelry. After asking himself if he wanted to do theatrics or do business, he began to create âcontemporary |  | | Book | | potential deposits of SiO2 raw materials in Argentina, Brazil, Germany and Norway. The third part of the book...collaboration between scientists from Australia, Brazil, Canada, Germany, Norway, Switzerland and the USA...Color-Enhancing of Gemological Crystalline Quartz in Brazil . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . 6.3.3 Quartz Color-Enhancing in Brazil. . . . . . . . . . . . . . . . . . . . . . 139...Geologia, Universidade Federal do Pernambuco (UFPE), Recife, PE 50740-530, Brazil Mario L. S. C. Chaves Departamento |  | | Journal (issue) | | pearls âą New imitation: âShell pearlsâ with a calcite bead 137 Thank You, Donors 138 Gem News International...amber imitation âą Assembled diamond imitations from Brazil âą Enamel-backed quartz as a star sapphire imitation...our authors and staff invested in every issue to do the research, write and refine the articles, and...treasure chest of information. But how do you access it? How do you find what you need? We are pleased...thickness, that are comprised of aragonite and/or calcite along with some organic matter. As the pearl grows |
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