We import large quantities of Amethyst from Brazil each year. We get various types and qualities from different locations in Brazil. The mine rough material will come from various places, but the clusters and geodes mostly come from the south. In most cases, good quality gemstone material is not found in large quantities. It is always an added plus when finding gemstone grade material.
Here is a short video that a friend put together from one of the Amethyst Mines.Brazil Amethyst Mine