High-quality quartz countertops are designed to be highly resistant to discoloration and yellowing over time. However, it's important to note that the color stability of quartz can vary based on the quality of the resin used during the manufacturing process and the specific brand or product. In general, yellowing of quartz countertops is not a common issue with reputable brands and well-made products. The resins used in manufacturing are formulated to be UV-stable and resistant to discoloration caused by sunlight exposure. To ensure the longevity and color stability of your quartz countertops, consider the following tips: Choose a High-Quality Product: Opt for quartz countertops from reputable manufacturers known for producing top-quality products. High-grade quartz countertops are less likely to discolor or yellow over time. Regular Cleaning: Clean your countertops regularly with mild soap and water to prevent the buildup of dirt or substances that may affect their appearance. Use Cutting Boards and Hot Pads: To prevent potential damage or discoloration, use cutting boards when working with knives and hot pads or trivets to protect the surface from hot cookware. Follow Manufacturer Guidelines: Adhere to the manufacturer's guidelines and recommendations for cleaning and maintenance to ensure the longevity of your quartz countertops. If you notice any unusual discoloration on your quartz countertops, especially if they are still under warranty, contact the manufacturer or the installer to assess the issue and explore possible remedies. Overall, while yellowing is not a typical problem with high-quality quartz countertops, it's essential to maintain them properly and take precautions to protect them from potential sources of discoloration.