Marble comes from crystallisations inside rocks. It looks beautiful and can take a number of different colours. The most famous marble is probably white marble from Carrarra in Italy.
Marble cutting boards look beautiful in a kitchen. They are great for serving food, and you might consider a marble cheese board or marble charcuterie board. However, they are a bad material for cutting boards as they will quickly dull and damage your knives. Do not use marble for this, it is better to select a beautiful wood for your cutting board.