I agree with Fred-Just to add-I might start with something like a 120 electroplated dry.See if you can get below it.
Maybe UV repair kit may help-

On Wed, May 24, 2017 at 7:47 PM, <csantospago@gmail.com> wrote:
Thanks again Fred

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On May 24, 2017, at 5:04 PM, Fred Hueston <fhueston@gmail.com> wrote:

In that case, I would recommend using diamonds designed for EStone. I like the Alpha Ceramica EX diamonds. Go with slower RPM and use plenty of water. With light colored ES, you should be able to get a polish at 2000-3000 and may not need any polishing powders or compounds. I would do the entire top that way it will all look uniform.

On Wed, May 24, 2017 at 5:00 PM, <csantospago@gmail.com> wrote:
Thanks Fred. They are willing to take the chance because it's either fix it or replace it. I already told them that spot repair is impossible. I would need to do the whole peninsula. I've just never worked on quartz before and was hoping I could get some advice. I've already put in a call to CaesarStone. 
There are probably at least 20 to 25 kitchens here with this issue. 

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On May 24, 2017, at 4:54 PM, Fred Hueston <fhueston@gmail.com> wrote:

might be very difficult to repair without causing a dish or bowl depression.  Also any repairs will void the warranty. I would walk away from this one.

On Wed, May 24, 2017 at 4:51 PM, <csantospago@gmail.com> wrote:
Hi partners,

New construction condo building in Boston with Cesar Stone blizzard white counters. Actually the more expensive units have genuine Cesar Stone while many of the other units are a Chinese knock off but looks identical. The problem is somebody used sandpaper to remove blemishes in certain areas. Tried a compound to bring it back but unsuccessful and it will need to be taken down to probably 220 at least.
Here is a picture of an area that somebody hit with a drill or Corbett. They tried to fix it but it needs to be filled and then sanded and polished.
I appreciate any advice on restoring the top of this white quartz.

Thank you,
Chris Santospago
Restoration by design stone


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--
Frederick M. Hueston
www.stoneforensics.com
office             321 514 6845      
Stone Inspection and Troubleshooting correspondence course
For more details see the training section at www.stoneforensics.com
Next live class coming soon
check out the Stone and Tile Radio Show at http://www.blogtalkradio.com/drfred


 
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--
Frederick M. Hueston
www.stoneforensics.com
office             321 514 6845      
Stone Inspection and Troubleshooting correspondence course
For more details see the training section at www.stoneforensics.com
Next live class coming soon
check out the Stone and Tile Radio Show at http://www.blogtalkradio.com/drfred


 
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Regards,
Stu Rosen
201-446-1200
www.stoneshine.com
www.mbstonecare.com