To ensure your superconductor ring remains in pristine condition, regular cleaning and proper maintenance are essential. One effective cleaning method involves using lemon and salt. Begin by slicing a lemon in half and sprinkling salt onto one of the cut sides. Gently rub this salted lemon half over the surface of your ring, using the natural abrasiveness of the salt and the acidity of the lemon to remove tarnish and restore shine. After thoroughly cleaning the ring with this mixture, rinse it under lukewarm water to remove any lemon and salt residues. Dry the ring thoroughly with a soft, lint-free cloth. This method is particularly suitable for the copper elements in superconductor rings, as the lemon-salt combination is effective in reviving the metal's natural lustre. Remember to clean your ring regularly and store it in a safe, dry place to prevent damage and maintain its aesthetic appeal.