Governador Valadares, city, eastern Minas Gerais estado (state), Brazil. It lies on the left bank of the Doce River. The city was made the seat of a municipality in 1937. It is an agricultural trade centre dealing in beans, rice, sugarcane, coffee, and livestock. Sawmills and food-processing plants are in the city, and mica and beryl are mined in the area. Governador Valadares is one of the most famous gem-trading centres in Brazil. Gem minerals include amethyst, chrysoberyl, brazilianite, topaz, and quartz. The city is on the rail line between Belo Horizonte and Vitória and on the highway between Rio de Janeiro and Salvador. It can also be reached by air. Pop. (2010) 263,689.