travertine--polish or hone

    I have travertine tile on my rear patio. We are consgtructing an outdoor grille/kitchen. The kitchen unit is stone and the counter top will be the same Travertine tile as on the patio. I would like for the Travertine on the counter to be smooth and "polished"--without the "pot holes" and rough edges. Can Travertine be polished and then maybe sealed/coated with something that would make it smooth?