You can also sand Corian down to remove the stain and buff it out. I
can't imagine Corian staining that bad since its non-porous. It is most
likely cultured marble with a granite finish. The gelcoat on cultured
marble is not that wonderful as you can't even use plumbers putty on
it. Might need to remove the sink top and take it to a kitchen and bath
place to have them sand and recoat it if it's cultured marble. Or throw
down 200-300 and buy a new one.


Liz wrote:
My neighbor asked my opinion on this and I'm turning to the experts.
She
has a dark gray with speckles (granite appearance) vanity in her
bathroom
which she thinks is Corian but not sure. She has kept a white pill
holder,
about 8 inches square, on the counter for about a year and now the
color in
that spot has whitened. Any idea on how to clean it if it is Korean?
And
if it's not? I saw it and it's pretty unsightly.

Thanks.