Marble countertops are more susceptible to scratches than granite due to their softer nature. While granite scores a 7 on the Mohs Hardness Scale and cannot be scratched by a standard kitchen knife, marble has a lower hardness score, typically ranging between 3 and 5. Based on the Mohs Hardness Scale, a knife can scratch materials with a hardness of 5.5 or under.
As a result, it is essential to take precautions when using knives on marble countertops. Always use cutting boards rather than cutting directly on the countertop surface to avoid scratching and maintain the beauty and longevity of your marble countertops.