MATERIALS AND METHODS For this study, we examined 41 samples from Fazenda Bonfim, including 11 pieces of emerald rough that were transparent and suitable for faceting and 15 thin sections
MATERIALS AND METHODSFor this study, we examined 41 samples from FazendaBonfim, including 11 pieces of emerald rough that weretransparent and suitable for faceting and 15 thin sections