# Diamond (octahedron)
v 0.000000 0.500000 0.000000
v 0.500000 0.000000 -0.500000
v 0.500000 0.000000 0.500000
v -0.500000 0.000000 0.500000
v -0.500000 0.000000 -0.500000
v 0.000000 -0.500000 0.000000
f 1 5 2
f 1 2 3
f 1 3 4
f 1 4 5
f 6 5 2
f 6 2 3
f 6 3 4
f 6 4 5