Wood box with 6 Plato polyhedron de Green Quartz which he associated each of the four classical elements (earth, air, water, and fire) with a regular solid.
Earth was associated with the cube, air with the octahedron, water with the icosahedron, and fire with the tetrahedron.
The fifth Platonic solid, the dodecahedron, Plato obscurely remarks, the god used for arranging the constellations on the whole heaven Plat.Timeo 360 b.c
