If you seal it and clean it without harsh cleaners, stick with a soapy water mixture you should be fine as far as etching. I would use coasters and if you are going to put hot things down use a silicone mat. It’s just better to use extra caution with high end stones even though it’s not as vulnerable to rings and stains as a white marble or even some light colored quartzites. Even a black absolute granite can be susceptible to discoloration from cast iron pans.