Deciding on Limestone or Marble?
Deciding on Limestone or Marble? Limestone and marble are chemically the same rock. They are made up of Calcium Carbonate. The difference is in how they are formed. Limestone is a sedimentary rock and Marble is Metamorphic. Sedimentary rocks are made of {you guessed it) sediments that accumulate at the bottom of a body of water and over time are buried and .