It is not advisable to use your marble countertop as a cutting board. Although marble is a durable and attractive material, it is softer and more porous than some other countertop materials like granite or quartz. Using your marble countertop as a cutting board may result in scratches and other damage to the surface, as well as potentially dulling your knives.
To protect your marble countertop and maintain its beauty and longevity, always use a separate cutting board when preparing food. This will not only prevent scratches but also help avoid any potential staining from acidic or colored foods that could mar the marble surface. Additionally, regular sealing and proper maintenance will help ensure your marble countertop remains in excellent condition.