hi guys,

i have a crack in a shower tile that is letting in water, this is new
marble tile. unfortuneately i used a repaired peice of tile which
eventually broke and has a crack that seeps water.

how can this crack be sealed? it is not visibly open, so my guess is
that its smaller than 1/16". would clear silicone do well here?

here is another alternative that would fix it, but, can i get the tool
to reshape my tile? if i could cut 2" strips of marble, then grind
them down from one top edge to the other bottom edge this would create
a slant that would allow no standing water on this portion of the
shower. question is, where can i get my 2" strips of marble ground to
my specifications?

thanks,
Fish