A method for growing ZrZn2 crystals from the melt is described. In a 1 cm3 sample, which contains large crystals, we measured very high resistivity ratios 293K / 4.2K of 120–131. The lattice constant was 0.73969(5)nm and the zinc-zirconium ratio 1.99. The temperature dependence of the resistivity was also measured. Furthermore, the crystals were characterized by Curie temperature and magnetic moment measurements.