Aren’t these Fantasy Brown dolomite countertops fabulous? Dolomite is easily one of our top-selling stones, loved for its marble look and gorgeous gray and white hues. Many stone shops and fabricators sell dolomite as a granite, but it is a different stone entirely. Unlike granite, dolomite is a sedimentary rock made from limestone and lime mud coming into contact with groundwater rich in magnesium. It’s not as hard and durable as granite, but it’s also not as soft and fragile as marble. And while it’s less liquid absorbent and less sensitive to acids than marble, like granite it does require periodic sealing. Price-wise, dolomite is often more affordable than marble, quartz, and quartzite—and sometimes even granite.