yes...and no...

https://www.caesarstoneus.com/blog/how-heat-resistant-is-quartz-countertop/#:~:text=Quartz%20kitchen%20countertops%20are%20heat,the%20countertops%20from%20heat%20damage.

…repeated softening without liquifying… (typo correction)

Anonymous wrote:Yes. I take pans out of the oven and put them directly on the counter. Haven’t had any issues.

You are brave. Our instructions said that quartz would NOT be suitable for oven pans, because most oven cooking is at a temperature which can melt the resins. Similarly, it said that a stovetop pan which was on medium or high would not be suitable, again because it could melt the resins. Note that “melt” includes softening, not just liquifying, the resins. Repeated softening without melting still can permanently damage quartz. An ordinary hot cup of tea or coffee is below the temperature where resins might melt.

Next time, we will pick actual granite for kitchen counters, even though we prefer the look of some quartz over most granite..

No problem with that kind of heat. Quartz is heat resistant to around 300 degrees F. Above that, the resin binders can change chemical composition; quartz countertops are usually 90% natural quartz and 10% pigments and resin. It's not a good idea to put hot pans directly on countertops, use a trivet or hot pad. It's not a bad idea to use a coaster for coffee cups in case of a small spill, but it's not really necessary in terms of insulating against the heat of a cup of coffee.

Yes. I take pans out of the oven and put them directly on the counter. Haven’t had any issues.

Good question- I just got quartz counters and am pleased with look of them and want to make sure I don't screw them up . Wouldn't occur to me not to put a hot mug on the counter...

Yes you can. I don’t put hot pots down but a mug certainly.

I don’t love quartz but got it because I thought it was low maintenance and kind of indestructible (I should have looked into the specifics more). I’m getting mixed answers on its heat resistance. Can I put a hot cup of coffee/tea directly on the counter or will that damage it?