According to the inquiry of CRD Clety Jewelry official website, not every brand has diamond ring trade-in, and only a few powerful professional diamond brands will introduce the rule of diamond ring trade-in. Trade-in of diamond rings is mainly about merchants recycling old diamond rings, then re-setting diamonds, replacing ring holders or directly replacing them with other styles for consumers, who need to make up a certain price difference and handling fee. Some brands of diamond rings can be replaced with new ones, but each brand has different standards for exchanging old ones for new ones.