| Registros del 1 al 4 de 4 encontrados |
1.- Barite from Alenquer, Brazil
Deutsche Gemmologische Gesellschaft e.V.; Idar-Oberstein; DEU; Germany, 2010
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2.- Color centers in topaz; comparison between neutron and gamma irradiation
Springer-Verlag; Berlin - New York; III; International, 2007
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3.- Montebrasit in Edelsteinqualitaet; ein seltener Fund aus Brasilien ;Gem quality montebrasite; a rare find from Brazil
Deutsche Gemmologische Gesellschaft e.V.; Idar-Oberstein; DEU; Germany, 2010
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4.- Purplish-red almandine garnets with alexandrite-like effect; causes of colors and color-enhancing treatments
Springer-Verlag; Berlin - New York; III; International, 2013
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