This is a fine specimen consisting of superb, sharp, gemmy, highly lustrous, prismatic, purple color crystals of Amethyst measuring up to 2.2 cm sitting atop white/colorless, modified rhombohedra of Calcite with underlain green "Chlorite" on matrix. This piece is remarkable for Bolivia as the quality of the crystals is as fine as I have seen for Amethyst from any Bolivian locality.