Brown Marble-Need some help on this.

1.     1.   We cannot get a deep dark shine on this marble.

400, 800, 1800, 3500. Polish with 5x that did nothing.

2.        2. Our 3 inch resins (1800 and 3500) left scratches and resin marks.

What resin pads are the best. This is the second time we have had the

Scratch issues with the higher grit.

3. Should i plan on finishing it with 00steel wool and a crystalizer?