Marble

Marble need careful treatment.

It's best not to dust with a cloth but to use a feather duster.

Never ever use soap!!!

Best use a soft wet cloth and wipe away the dust and dirt and immediately dry it with a soft dry cloth.

Grease can't be removed from marble. So prevent it.
All you can do is wipe it away as soon as possible and then use a damp cloth that is emerged in water with a little bit of ammonia, a dry cloth, a damp cloth with water only and a dry soft cloth.