Rhombic Dodecahedron (Cuboctahedron)

In geometry, the rhombic dodecahedron is a convex polyhedron with 12 congruent rhombic faces. It has 24 edges, and 14 vertices of two types. It is a Catalan solid, and the dual polyhedron of the cuboctahedron.

https://en.wikipedia.org/wiki/Rhombic_dodecahedron