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Showing 1 to 1 of 1 for “"Tourmaline paraiba"”.
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A Turmalina Paraíba e seus cenários.
This paper discusses the Paraiba Tourmaline, discovered in the mid-1980s in state of Paraíba. Therefore, surveys were conducted in both books, the Internet, and conducting interviews. Despite the discovery of new mines, this still remains a rare type of tourmaline, which, among other reasons, …