Indeed, tarnished necklaces can be restored to their former brilliance. For silver jewelry, a gentle solution of baking soda and water forms a mild abrasive paste. Gently rub it over the tarnished areas with a soft cloth, then rinse and pat dry. Alternatively, specialized silver polishes designed for tarnish removal work wonders. For gold, a mixture of warm water and a few drops of dish soap can be effective. Avoid abrasive materials, opting for soft cloths or cotton balls. Regular maintenance and swift tarnish removal can rejuvenate your necklace, ensuring it gleams with timeless beauty, ready to grace any occasion.