Can a marble cutting board be used on a grill?

Using a marble cutting board on a grill is not recommended. Marble can crack or break due to the high heat of a grill, and it may not withstand direct flames or extreme temperature changes. Additionally, the porous nature of marble can absorb food juices and odors, making it less hygienic for cooking. It's best to use materials specifically designed for grilling, such as metal or heat-resistant ceramic.