Yes! The standard MOHS (Measure of Hardness Scale) goes from 1 (Talc) to 10 (Diamond). Granites are typically in the range of 7, marbles around 3-4, soapstone 1.5. It is illuminating to know that steel is a 5 on the scale. So if you run a knife on granite, you get a dull knife. If you run a knife on marble, you’ll have scratched marble