To polish or not to polish
Hey Lynne,
In order to get the high shine that the marble has on it's surface you would generally need a polishing wheel and several steps (about 8) of rouge to get to the final buff. It does take a long time unless you have an automatic polisher like the marble companies have. Personally I think that you can use several quick sanding steps and and a couple of quick intermediate rouges to get an acceptible edge. It's not going to be the high polich but it should only take 15 to 20 minutes to do.
The sanding you can start with a 440 grit wet, if the edges are pretty clean, and run in about 3 steps to a 1200 wet. Then use two or three intermediate rouge steps with a wheel.
Most tile and marble supply companies carry the polishers and the rouge for small jobs.
Michael