To use this beautiful black marble beads necklace, simply put it around your neck. It's great for adding a touch of elegance to any outfit. When it comes to maintenance, keep it away from harsh chemicals and rough surfaces. If it gets dirty, you can gently wipe it with a soft, dry cloth. Remember, due to the presence of chemicals like cadmium, lead, and nickel, avoid prolonged skin contact and keep it out of reach of children. Enjoy wearing your new necklace!