Marble is a popular countertop surface that has been trending for years. While granite scores better than marble when comparing performance characteristics in a kitchen environment, many people choose marble due to its aesthetic appeal and subtle veining.
Granite and marble are made of different minerals that perform differently in regards to chemical resistance and hardness. Marble will scratch more easily than granite because it is a softer stone. It will also etch more easily when exposed to acids and bases. Sealing will not prevent etching.
If you use marble in your kitchen, it is important to first understand its nuances. It will not look the same 10 years from now as it did the day it was first installed. As you use the surface, it will acquire scratches and finish variations. This evolution is called a patina, and many consider it a thing of beauty. Some homeowners opt to regularly resurface their marble countertops to restore their original luster. Another option is to choose a honed finish instead of polished. This will reduce the visibility of surface imperfections and allow your countertop to age gracefully.