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 Ver registro 2.- (SUPER 40) AR/ (SUPER 39) AR AGE AND COMPOSITION OF TEKTITES FROM BELIZE GEOLOGICAL SOCIETY OF AMERICA (GSA); BOULDER, CO; USA; UNITED STATES, 1995 GEOLOGICAL SOCIETY OF AMERICA, 1995 ANNUAL MEETING Ver registro 3.- A REFLECTED LIGHT INVESTIGATION OF VONSENITE, BURGUILLOS DEL CERRO, BADAJOZ (SPAIN); 1981 Ver registro 4.- Alexandrite von Minacu, Goias, Brasilien: ein primaeres Vorkommen ;Alexandrite from Minacu, Goias, Brazil; a primary deposit Deutsche Gemmologische Gesellschaft e.V.; Idar-Oberstein; DEU; Germany, 2010 Ver registro 5.- ALGUMAS GRANADAS PORTUGUESAS; 1979 Ver registro 6.- ANALISIS COLORIMETRICO DE LAS PIEDRAS SEMIPRECIOSAS DE LA REGION MOA-SAGUA DE TANAMO 1996 Ver registro 7.- AS TURMALINAS DO MORRO REDONDO, CORONEL MURTA, MG 1995 Ver registro 8.- ASTROFILITA, UN MINERAL NUEVO EN ESPAÑA 1961 Ver registro 9.- Barite from Alenquer, Brazil Deutsche Gemmologische Gesellschaft e.V.; Idar-Oberstein; DEU; Germany, 2010 Ver registro 10.- BERILU GRUPES MINERALU GEMOLOGINIAI TYRIMAI ;GEMOLOGICAL STUDIES OF BERYL GROUP MINERALS THE GEOLOGICAL SOCIETY OF LITHUANIA; VILNA; LTU; LITHUANIA, 1998 Ver registro
