How to tell if a ring is bad quality?

How can one determine the quality of a ring, especially when it comes to identifying poor craftsmanship or the use of inferior materials? Are there specific characteristics to look out for, such as uneven surfaces, dull metal, or weak prongs that may indicate a lower-quality ring? Additionally, what steps can be taken to ensure that one is purchasing a ring that will stand the test of time and maintain its beauty and value over the years?