Radioactive Granite in Your Kitchen

Granite is increasingly a “must have” for the kitchen, but did you know that most granite is slightly radioactive?

Some granite slabs may make for much HOTTER kitchen countertops than you imagined.

“Health physicists and radiation experts agree that most granite countertops emit radiation and radon at extremely low levels,” but the decision to remove granite is usually only recommended if it releases “4 picocuries per liter of air. That’s about the same risk for cancer as smoking a half a pack of cigarettes per day.”

Steve employs a building biologist who routinely checks stone going into client homes for radio activity. He uses a geiger counter to perform a 20-30 minute test to compare outside levels to levels directly adjacent to the stone. It happens rarely these days, but if we record levels over the Building Biology standards it’s cause for concern. On a recent trip to the stone yards to pick out granite for a client we were startled to find a red/orange slab called Crema Bordeaux that was over the limit by more than 200%.

If you’re concerned whether or not your countertops might be glowing in the dark, let us know and we can check them out.  Meantime, it might be a good idea to beware of Crema Bordeaux!


Here is the test on six types of stone done in April 2012 (below)

Also, here is a New York Times article on radioactive stone done several years ago.