If you're looking for a quick polish to shiny up that marble, use Stone
Polish:
http://www.stonetechpro.com/products/refinish/sp/

but if you're dealing with etching, etc. You are going to want to use
Euro Polish:
http://www.stonetechpro.com/products/refinish/eup/

Any questions send in a request to StoneTech Professional, they answer
questions for free and over weekends!
http://www.stonetechpro.com/stonecare/contact.php