19-4 gyrochoron

The 19-4 gyrochoron, also known as rocky 19, is a convex isochoric polychoron and member of the gyrochoron family with 19 identical cells. It can also be constructed as the 19-5 gyrochoron.

Each cell of this polychoron has mirror symmetry, with 2 octagons, 4 hexagons, 2 tetragons, and 4 triangles for faces.