"kingrat" wrote in message
...
At the advice of the person who laid marble tile in my foyer, I didn't
seal it prior to grouting. 90% of it looks good, but there are spots
where the grout seems to have penetrated the marble, one piece so badly
that I will probably ask him to remove it completely. Is there a way to
remove some of the grout that has penetrated the marble? Thank you.

no.