It may be fake. Plain ring is a special kind of jewelry. After special treatment, its performance will be improved accordingly, and it is not easy to be worn and scratched. So if there is wear or scratches, it may indicate that the ring may be fake. Plain ring is an ancient jewelry, which is round or polygonal, with different exquisite patterns on the surface, and has cultural and artistic value. Usually matched with pure gold, pure silver or other precious metal materials, it has good corrosion resistance and protection ability.