cleaning marble and granite

Crap!!! Forgot to send in some pics!! So much for that.
The guy in the shop told me today I'll never be able to get those scratches out of that counter. He says that the scratches will be stained and the marks will still be there. I told him I'll get them out.
 I'll start with the 50 and start feathering the other grits. I guess I should start where the scratches are and then work my way down the counter but I should not have to go all the way down tho just so long as not to make any dips where I start grinding. Buddy's kinda got me thinking now if I should tackle this

 Did you make that short vid yet Joh?

Have a good one. Mark

Thanks Jos. I'll stop by in the next week and mention about them removing the taps or I have to charge extra, I think it's usually 31/2" or 4" from the sink to the back splash. I usually try to make it 4"

On another note. Installed a white Persian Granite today. Disaster from the "get go" Chipped both pieces of granite on the install. I ended up faking it in by using the technique that you suggested JOS and they could not even tell the dif.  My buddy (the owner) could not believe it.  Where was the cam then. LOL

I should have taken pics of the sink as well. It's a top mount. I should probably duct tape off the sink edges just to be safe in case I hit with the diamonds.
 It's a tight area between the taps and faucet to the blacksplash and sink.

I was hoping to stay away from the powders if possible. I figure I'd start with 100 and go up to 3000. Should I try to get all the scratch (knife cuts) out with the 100 before proceeding with the next grit?

Right on I have pure tin oxide. Would this be okay to use on that counter??
Thanks for taking the time for all these PITA questions but I just don't want to end up buying this counter.

Now that would be awesome Jos for a vid.
What's the limit for pics to send in? 1?

Thanks Bro. Mark

This course sounds like the cat's A$$! Like I mentioned before, I help a buddy in a fab shop and now I'm getting more & more calls for polishing. Counters and floors.
 The thing is, my main thing has been mostly cutting slabs and installs. Not much polishing and seam work. In the pics of the green counter posted in an earlier post, I knew right away it was one of my buddy's installs because of the way the seam was done. He always just mix the epoxy and adds the colour to it. No polishing or anything afterwards so they all look like this. Wide and dull.
 I like how you mentioned Joh of layering the colours. That is a great idea!!!!!!
Apply the different colours in the seam the same as the marble/granite. Let set up and polish. This will help the seam to blend in more. I guess for that counter I could mix some light and dark greens and layer them or apply light in the light areas and dark in the darer areas.
 How long before polishing the seam?
 I'm gonna practise this technique in the shop this week. (Can't tomorrow. My Granddaughter is being born)
 It will most likely be with granite as we don't do hardly any marble any more as granite is the main choice.