This is a complete floater that features several stacked octahedrons of lustrous, dark metallic hematite after magnetite. The octahedrons reach 2.5 cm across and if you observe carefully, the three crystals on top of the stack exhibit incipient hopper growth though not so much that they mar the octohedral form as yet. This is a pristine floater, complete all around, with better luster in person than appears here!