A tiny bit is ALL you should be concerned. Less than 1% of all granite will give the readings they're talking about. Do a search in here on the word "Radon", and you should come up with almost 30 different threads. Some are nothing more than back and forth accusations between an alarmist and a few industry pros (myself included), but if you check some of the smaller threads, you'll find some good information.

Thanks so much for helpful comments. Well, Ethereal Glow is described as neutral, but on the warmer side. The white is somewhat off-white and it has gold and very light gray veins. Our short list included (after seeing many, many slabs) silestone calacatta gold, ethereal glow, MSI Prado, and MSI Valentin. My favorite is Valentin, but my husband has STRONG preferences for glow. It looks like we need to revisit our choice and go over the short list again. Thanks.

That was not no point.. I picked a quartz that I liked and went with it. If I wanted marble in the kitchen I would have purchased it -- with no problem

What the heck are you talking about?