Topaz is a well-known mineral, occurring in large and beautifully shaped and colored crystals. It naturally occurs in many colors, but rarely in pink, purple, and deep blue. The most important Topaz deposits are in Brazil. Exceptionally large crystals come from many of the Brazilian pegmatite localities in Minas Gerais, especially at Itinga and Virgem da Lapa, in the Jequitinhonha valley. The famous golden orange-brown Imperial Topaz, as well as Topaz of pinkish tones, come from the famous occurrence in Minas Gerais at Ouero Prito.