A 16-sided die based on an isohedral "skewed in-out" dipyramid. The faces of the base polyhedron are identical scalene triangles. The numbering follows the hexadecimal digits 0123456789ABCDEF. The outer polyhedral shell is supported by an inner stick cross.
Added an octagonal frame on the equatorial plane to prevent the die from landing on the "flat" edges (e.g. D-9, see image).