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IMPERIAL TOPAZ

Imperial topaz crystals in the appreciated wine color, the largest of which measures 50 x 13 mm, from Dom Bosco, Ouro Preto, Minas Gerais. Collection of the Museu de Ciência e Técnica of the Escola de Minas of the Universidade Federal de Ouro Preto. Photograph taken by Marcelo Lerner.