The cost of a diamond ring can vary widely depending on various factors, including the carat weight, cut, color, clarity, and overall quality of the diamond, as well as the metal used in the setting. Additionally, brand reputation and market demand can influence the price. It's challenging to determine an average cost without specific parameters. Diamond ring prices can range from a few hundred dollars for smaller, simpler designs to several thousand or more for larger, high-quality diamonds or intricate settings. It's best to establish a budget and work with a trusted jeweler who can guide you in finding the best diamond ring within your price range.