The fruit takes 14 months to mature after pollination of the flowers. The fruit itself is a large capsule in diameter, resembling a coconut endocarp in size and weighing up to . It has a hard, woody shell thick, which contains eight to 24 wedge-shaped seeds long (the "Brazil nuts") packed like the segments of an orange, but not limited to one whorl of segments. Up to three whorls can be stacked onto each other, with the polar ends of the segments of the middle whorl nestling into the upper and lower whorls (see illustration from "Scientific American" above).