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 bilateral symmetry, with 2 mirror-symmetric octagons, 4 mirror-symmetric hexagons, 2 kites, and 4 isosceles triangles for faces.