Figure represents the equilibrium placement for the net of diamond (called dia in the RCSR). Note that the natural embedding in 3 imposes a cubic unit cell for all nets, which is not representative of the actual unit cell of diamond; however, the geometry of the unit cell is irrelevant here because only the topology of the net matters. As a consequence, the bond lengths are not representative of that of diamond either, which explains why not all have the same lengths in this representation. Nonetheless, each vertex is indeed at the barycentre of the positions of its neighbours.