is marble porous
Marble is a softer and more porous surface than granite or quartz so it can wear slightly. Part of marbleâs charm is its changing luster as it ages, though it can always be re-polished and restored to its original shine. Marble typically requires sealant every year as well.arble is a metamorphic rock composed of recrystallized limestone or carbonate minerals, such as calcite and dolomite. When these rocks are exposed to extreme temperature and pressure, the recrystallization process forces each molecule closer together and forms an interlocking carbonate crystal structure.