Quartz countertops may or may not change color—it's uncertain. Currently, there are two reasons proposed for the discoloration of quartz countertops. One is that the surface may have left thick stains due to inadequate cleaning, giving the impression of discoloration or渗色. The other is that the countertop might actually have changed color.

During the use of quartz stone countertops, it's important to avoid discoloration. 1. Avoid placing hot items directly on the countertop, as this can cause discoloration; 2. Avoid excessive contact with acidic substances like lemons and vinegar, which can also lead to discoloration; 3. Avoid using abrasives, metal polish, and other chemicals on the countertop, as these can damage it.