| Registros del 1 al 2 de 2 encontrados |
1.- "Paraiba"-type copper-bearing tourmaline from Brazil, Nigeria, and Mozambique; chemical fingerprinting by LA-ICP-MS
Gemological Institute of America; Santa Monica, CA; USA; United States, 2006
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2.- NATURAL AMETHYST FROM THE CAXARAI MINE, BRAZIL, WITH A SPECTRUM CONTAINING AN ABSORPTION PEAK AT 3543 CM (SUPER -1)
GEMMOLOGICAL ASSOCIATION AND GEM TESTING LABORATORY OF GREAT BRITAIN; LONDON; GBR; UNITED KINGDOM, 2002
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