human
What's the best way to clean a ring that has a black mark on it?
assistant
The best way to clean a ring that has a black mark on it is to use a soft, lint-free cloth and rubbing alcohol. Gently rub the cloth over the area with the stain, being careful not to scratch the surface of the ring. Afterward, rinse the ring in warm water and dry it thoroughly. If the stain does not come out, consult your jeweler for further advice.