Step 1: To clean your pearl necklace, start by wiping the pearls with a soft cloth to remove any dirt or debris. Step 2: Next, mix warm water with a small amount of mild soap and gently scrub the pearls with a soft toothbrush. Step 3: Rinse the pearls thoroughly in clean water and pat dry with a soft cloth. Avoid using harsh chemicals or soaking the pearls in water for extended periods of time. You can also bring your pearl necklace to a professional jewelry cleaner for a more thorough cleaning.