"dadiOH" wrote:

The rubbing compound was to fine to remove the scratch.

1. Remove scratch with fine sand paper (black silicon carbide "wet or dry"
works well). How fine? As fine as possible but coarse enough to remove the
scratch without sanding forever.

2. Sand area with finer papers, working to #1000 or so as the final.

3. *Polish* with the rubbing compound (or other) to restore the sheen you
want.

However..... Keep in mind that cultured marble is a manmade product that cosists
of a powered marble color base that is covered with a thin gelcoat. If you sand
or otherwise bring the gelcoat down to the color, you will not be able to
restore the gloss finish.