Stones and crystals are made of natural raw stones, and some stones have cracks, which is a normal. The size of each stone is different Material: Copper,Stone Size of pendant: 47mm*70mm / 1.85*2.76in Size of chain :3mm*600mm / 0.12in*26.62in Surface : High Polish ★Made of high quality material, Nickel-free / Lead-free, Harmless to Human Body. ★Perfect jewelry gifts