Although perylene crystals have been known to show both dimeric (alpha) and monomeric (beta) phases, to date only the stable a-crystals have been obtained under conventional conditions. Here, we propose a procedure for the selective growth of phase perylene crystals, in which a saturated toluene solution at 350K was cooled to 298K with a high cooling rate (-30K/min). The sizes of beta-phase crystals obtained were in the order of 100 mu m.