Does quartz give off radon?
Emma Miller
Updated on February 22, 2026
This is not too surprising because, although both quartz and granite surfaces contain uranium and thorium (which decay to radon gas), quartz composites are much less porous than granite surfaces (recall that a polymer binds the quartz crystals) so radon gas may not be readily released from quartz countertops.
Are quartz countertops toxic?
As sleek “engineered stone” countertops grow in popularity, safety experts are warning that workers who handle them are at particularly high risk from an old workplace hazard — silica, the mineral tied to silicosis, a debilitating and potentially deadly lung disease.Are quartz countertops carcinogenic?
Yes, some granites and quartzes contain uranium, a radioactive element. You are safe from significant exposure to the uranium while it is locked in the granite and/or if it is present at very low levels within the installed materials.Is quartz safer than granite?
Quartz is actually harder than granite and thus, more durable. In fact, quartz is nearly indestructible, and because it isn't porous like granite, it's easy to keep your countertops relatively bacteria-free.Do quartz countertops emit VOCs?
Quartz Counters (Engineered Stone)Quartz is made of ground quartz (real stone), pigment and a binder, usually polyester resin. They claim that the final product is fully cured (no VOCs), but it did have a very minor offgassing odor for the first few days. After that, I found it completely safe.