This is one of the finest and most unique fluorite groups I have seen from Berbes. A transparent, lustrous, lilac cube, to 2.5 cm across, exhibits deep purple color zoning in the center of the crystal. This is pretty damned good already! The color and zoning are sharp and rare! Moreover, associated with the cube is a 3.0 crystal of different habit: cubic highly modified by the octahedron. This crystal also is lustrous, slightly deeper purple, and translucent. Outstanding, in every way!