Rare Cumengite specimen, the finest one I obtained years ago from a Mexican miner. Cumengite is a rare halide that grows on the faces of Boleite cubes. There are pointed crystals of Cumengite on all 6 of the Boleite cube faces, and all are perfect. Rare to find complete 'stars' or 'jumping jacks' of Cumengite. Amazing geometric form and deep blue color.