These items work great to protect my new quartz counters from someone inadvertently placing a hot pot (or casserole) directly on them. Some people think that any stone can withstand high heat....not so. White quartz is elegant but it is necessary (for these or any counters...not just white quartz) to protect them from hot pots. Otherwise, the pot can leave a burn mark. Marks are less noticeable on darker stones (i.e. granite) but really ugly on light quartz. As such, I use these ALL the time coupled with other heat-resistant counter protectors. Additionally, their unique style makes them attractive enough to leave on the counter to encourage strangers to use them. I am very happy with and highly recommend this product.