Heat Resistance Quartz countertops ARE NOT heat proof, chemical proof or fracture proof in any form. To maintain the beauty of your quartz countertop, DO NOT place hot skillets, roasting pans, or heat generating appliances directly onto the surface. We recommend the use of trivets and hot pads to prevent heating the top. Certain exposure to heat may cause cracks due to thermal shock. Cuts or Scratches Quartz is one of the hardest materials in nature. That is why your new quartz countertop will not easily scratch or chip. We do, however, recommend the use of a cutting board to protect the surface and avoid dulling your knives.