I work fabricating granite countertops does cutting it put me at a higher risk of radon gases?

Not exactly. If you work wet , you shouldnt have an issue. The only time you need to be careful is if you fabricate stones from Namibia, Africa. They are quarried basically along side of Uranium mines. Not many fabricators work with these stones however, since most from this area are very exotic. Other than that, Niagra Gold is also , somewhat hazardous, but fabrictaing that stone all day will not expose you to any more radiation than a flight to California from the east cost. Crema Bordeaux and Juparana Bordeaux are also two that are very high, but about as harmful as your cell phone. If you are still worried, or if you work as a dry cutter you can wear a Valved Mask over your nose and mouth. You can also bug your Boss to have someone from a local University come to your fabrication area with a giger counter, just to be safe. :)