Jonas Mine, Itatiaia district, Conselheiro Pena, Doce valley, Minas Gerais, Southeast Region, Brazil

Famous for its rubellite. A single pocket yielded gem crystals now valued at about $50 million, including three of the world’s top five specimens. In the early 1990's, another pocket yielded large reddish muscovite crystals to several cms across, on albite.
Ref.: Rocks & Min.:58:23, 59:276 & 63:41;