 | 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 Paraná 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 δ34S values (−15.0 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 |  | | Journal (issue) | | Articles 708 Coloured Stone Mining and Trade in Brazil: A Brief History and Current Status By Aurélien...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...unusual materials such as labradorite, moonstone and opal. Figure 22: In the late 1800s, Wilhelm Schmidt...material, it is likely to have been Rio Grande do Sul in Brazil, well known for its amethyst, agate and |  | | Journal (issue) | | Is it a place where your customers want to be? • Do your salespeople spend 70% of their time on customers’...customers’ rational needs or on their emotional desires? • 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 “contemporary |  | | 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) | | amber imitation • Assembled diamond imitations from Brazil • 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...X-radiographic struc- Figure A-5. Natural pearls typically do not show evidence of a nucleus, only the structures...formerly were white fluoresce a lighter color than do the yellow zones. The uneven fluorescence also may |
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Salto do Jacuí, Rio Grande do Sul, Brazil