The edges of the hoppered crystals on this lab-grown bismuth specimen are fully developed, but the interior spaces are not filled in. This results in a hollowed-out step lattice formation, as if someone had removed interior sections of the individual crystals. In fact, the "removed" sections never filled in, because the crystal was growing so rapidly that there was not enough time or material to fill in the gaps. The colors are fantastic neon-bright shades of magenta, gold, green, blue, and silver, and there is no damage.