| Registros del 1 al 2 de 2 encontrados |
1.- "Paraiba" tourmaline and similar looking materials
Gemmological Association of Great Britain; Society of Jewellery Historians; London; GBR; United King, 2008
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2.- Gem-quality andalusite from Brazil
Gemological Institute of America; Santa Monica, CA; USA; United States, 2009
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