The Radioactivity Of Marble

Granite and marble do emit tiny but noticeable amount of radiation in different proportions.
The radioactivity of marble. The amount of radioactivity in building materials depends on the type of material but the amount of radiation released from these materials is typically very very low. Some building materials such as granite brick marble and other items contain natural radioactivity. One of the top picks for us homeowners is granite because it is durable and beautiful as well as affordable. Many homes contain decorative rock and stone such as granite and marble.
These range from natural materials such as wood marble and granite to engineered products such as quartz stone. Generally these substances contain traces of radioactive elements like uranium thorium and their daughter products like radium polonium and radon. Both granite and marble are naturally occurring materials that were formed millions of years ago similar to minerals. Although the marbles emit beta particles and gamma rays which are dangerous at high levels they only give off a small number of these radioactive decay products.
However some articles have circulated that claim granite is a source of harmful radiation specifically radon.